Documentation: Census 1980
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Publisher: U.S. Census Bureau
Survey: Census 1980
Document: Summary Tape File 3
citation:
Social Explorer; U.S. Census Bureau; Census of Population and Housing, 1980: Summary Tape File 3 [machine-readable data file] / conducted By the U.S. Bureau of the Census. Washington: Bureau of the Census [producer and distributor], 1982.
Summary Tape File 3
General
Acknowledgement of Assistance
All manuscripts utilizing data made available through the Consortium should acknowledge that fact as well as identify the original collector of the data. The ICPSR Council urges all users of the ICPSR Data facilities to follow some adaptation of this statement with the parentheses indicating items to be filled in appropriately or deleted by the individual user.

The data (and tabulations) utilized in this (publication) were made available (in part) by the Inter-university Consortium for Political and Social Research. The data for Census of Population and Housing [United States]: Summary Tape File 3 were originally collected by the U.S. Department of Commerce, Bureau of the Census. Neither the collectors of the original data nor the Consortium bear any responsibility for the analyses or interpretations presented here.

In order to provide funding agencies with essential information about the use of archival resources and to facilitate the exchange of information about ICPSR participants' research activities, each user of the ICPSR data facilities is expected to send two copies of each completed manuscript or thesis abstract to the Consortium. Please indicate in the cover letter which data were used.

U.S. Dept. of Commerce. Bureau of the Census:

  • Census of Population and Housing, 1980 (United States): Summary Tape File 3A (ICPSR 8071)
  • Census of Population and Housing, 1980 (United States): Summary Tape File 3B (ICPSR 8318)
  • Census of Population and Housing, 1980 (United States): Summary Tape File 3C (ICPSR 8038)
  • Census of Population and Housing, 1980 (United States): Summary Tape File 3D (ICPSR 8157)
  • Census of Population and Housing, 1980 (United States): SummaryTape File 3D Congressional District-Level Extract (ICSPR 8710)
  • Census of Population and Housing, 1980 (United States): Summary Tape File 3H (ICPSR 8402)

Summary Tape File 3 consists of five sets of files that contain detailed tabulations of the nation's population and housing characteristics produced from the 1980 Census. The series consists of Summary Tape Files (STF) 3A, 3B, 3C, 3D, and 3H. The files contain sample data inflated to represent the total population; "100 percent counts" and unweighted sample counts are also provided for certain characteristics.

Complete-count data are included for demographic data such as age, race, sex, marital status, and Spanish origin, and for housing information such as the number of rooms at the address, occupancy status, property value, number of rooms, and plumbing facilities. Sample data inflated to represent the total population are provided for other topics: education, language, ancestry, employment, transportation, and income, plus detailed Information on housing characteristics.

All datasets in the STF3 series have identical record formats and technical characteristics (except for the omission of 100 percent counts from STF3B). Substantive data variables are organized in the form of 150 "tables" that are accompanied by standard geographic identification variables. The various collections differ only in the types of geographical areas for which the data are summarized.

STF3A provides summaries for the States or state equivalents; Counties or county equivalents; minor civil divisions (MCDs) or census county divisions (CCDs); places or place segments within MCD/CCDs or remainders of MCD/CCDs; census tracts or block numbering areas; block groups or enumeration districts; places; and Congressional Districts. An additional STF 3A file for Puerto Rico is also available from ICPSR. The information in this file is similar to but not identical with the data for the 50 states and the District of Columbia. This file is documented in a separate codebook.

STF3B provides summaries for each 5-digit ZIP code area in numeric order within each state. The data are summarized at the state, Standard Metropolitan Statistical Area (SMSA), and county levels.

STF3C is a national file containing summaries for the following levels: United States, Census Regions, Census Divisions, States, Standard Consolidated Statistical Areas (SCSAs), SMSAs, urbanized areas (UAs), counties, places of 10,000 or more, MCDs of 10,000 or more (in eleven selected states), and Congressional Districts.

STF3D provides summaries for state or state equivalent; Congressional District (as constituted for the 98th Congress); county or county equivalent; places of 10,000 or more people; and minor civil divisions or census county divisions. STF3H is a supplement to 3D; it supplies data for the ten States (California, Hawaii, Louisiana, Maine, Mississippi, Montana, New Jersey, New York, Texas, and Washington) that were redistricted for the 99th Congress.

STF3A, STF3B, and STF3D ate each comprised of 51 separate files: one for each state, plus the District of Columbia. STF3C consists of one nationwide data file containing information about all states. STF3H contains 10 files, one for each state covered. Each logical record in these collections consists of 12,096 characters, and is divided into six "record segments" of 2,016 characters. The number of records in each file varies by state. Class IV

Note to Users
The Census Bureau's machine-readable data dictionary forSTF3 is also available on the same tape as CENSPAC 3.2 (ICPSR #7789), the software package designed specifically by the Census Bureau foruse with the 1980 Census data files. A description of CENSPAC is located in the Instructional Packages section of ICPSR's Guide toResources and Services.

For a description of STF 3D Congressional District-Level Extract, see below.

Census of Population And Housing, 1980 [United States]: Summary Tape File 3D Congressional District-Level Extract (ICPSR 8710)
Summary
For this dataset, congressional district records were extracted from Summary Tape File 3D files and combined into a single file with the congressional district as the unit of analysis. While the 51 STF 3D files contain several levels of geographic hierarchy-state, congressional district, county or county equivalent, places with 10,000 or more inhabitants, and minor civil divisions with 10,000 or more inhabitants-with one file per state, this extract file presents data for one geographical level, the congressional district, and contains records for all congressional districts in the nation in one physical file. The 436 congressional districts described in the file are defined according to the boundaries established for the 98th Congress. Summary Tape File 3 consists of detailed tabulations of the nation's population and housing characteristics and is composed of five parts: STF 3A, STF 3B, STF 3C, STF 3D, and STF 3H. These files contain sample data inflated to represent the total population but also include 100-percent counts and unweighted sample counts for some variables. Complete-count data are supplied for demographic characteristics such as age, race, sex, marital staatus, and Spanish origin, and for housing information such as the number of units at the address, number of rooms, occupancy status, tenure, property value, and plumbing facilities. Sample data are provided for other items including education, language, ancestry, employment, transportation, and income. CLASS IV

Universe
All persons and housing units in the United States. SAMPLING: For STF 3 one-half of all housing units and persons in group quarters in incorporated places of less than 2,500 persons were included in the sample. In all other places, one-sixth of the housing units or persons in group quarters were sampled. When both sampling rates were taken into account, approximately 19 percent of the nation's housing units were included in the census sample.

This extract file was prepared by John McAdams, Associate Professor of Political Science at Marquette University. Data contained in the file are identical to those supplied by the Census Bureau in the congressional district-level records of STF 3D files, and standard Census Bureau technical documentation for STF 3 can be used with the file. The 12,096-character census logical record is divided into six segments of 2,016 characters each.

Extent Of Collection
1 data file

Data Format
Logical Record Length

File Structure
rectangular

436

Variables
approximately 1,150

Record Length
2,016

Records Per Case
6

Census of Population and Housing, 1980: Summary Tape File 3H: Congressional Districts of the 99th Congress
(Supplement to STF 3D--Congressional districts of the 98th Congress)

Technical Documentation

Abstract
Census of Population and Housing, 1930: Summary Tape File 3H, Congressional Districts of the 99th Congress (machine-readable data file)/Prepared by the U.S. Bureau of the Census. Washington: The Bureau (producer and distributor), 1984.

Type Of File
Summary statistics.

Universe Description
All persons and housing units in the following States: California, Hawaii, Louisiana, Maine, Mississippi, Montana, New Jersey, New York, Texas and Washington.

Subject-Matter Description
This file primarily contains sample data inflated to represent the total population. In addition, the file contains 100-percent counts and unweighted sample counts of persons and housing units. Population and housing items tabulated include the following:

Population
*Household relationship

*Sex

*Race

*Age

*Marital status

*Spanish origin

School enrollment

Years of school completed

Nativity and place of birth

Language spoken at home and ability to speak English

Ancestry

Residence in 1975

Labor force status in 1979

Veteran status and period of service

Work disability status

Transportation disability status

Children ever born

Labor force status

Place of work

Travel time to work

Means of transportation to work

Private vehicle occupancy (carpool arrangements)

Industry Occupation

Class of worker

Number of weeks worked in 1979

Usual hours worked per week in 1979

Number of weeks unemployed in 1979

Income in 1979 Income type in 1979

Poverty status in 1979

Housing
*Number of units at address

*Complete plumbing facilities

*Number of rooms

*Tenure (whether owned or rented)

*Vacancy status

*Value for noncondominiums

Rent

Units in structure

Stories in structure and presence of passenger elevator

Year structure built

Year householder moved into unit

Source of water

Farm residence

Sewage disposal

Heating equipment

House heating fuel

Water heating fuel

Cooking fuel

Kitchen facilities

Number of bedrooms

Number of bathrooms

Telephone in housing unit

Air conditioning

Number of vehicles available (automobiles, vans, and light trucks)

Selected monthly owner costs (sum of payments for real estate taxes, property insurance, utilities, and regular mortgage payments)

* 100-percent item from sample questionnaire.

Selected aggregates and medians are also provided.

Geographic Coverage
For the ten States listed in the Universe - State, congressional districts for the 99th Congress, counties, and those places (and in Maine, New Jersey and New York minor civil divisions) with 10,000 or more inhabitants.

Technical Description
File Size
One file per State, logical record length of 12,096 characters with six record segments of 2,016 characters each. The block size for the files varies with user specifications. A printout listing the block size and block count will he sent with each file.

File Sort Sequence
This file is sorted by level of geographic hierarchy.

Reference Materials
U.S. Bureau of the Census. "Census of Population and Housing, 1980: Summary Tape File 3H, Congressional Districts of the 99th Congress (supplement to STF 3D, Congressional Districts of the 98th Congress) Technical Documentation". The STF 3H supplement includes this abstract as well as additional information about the file. STF 3D documentation includes a data dictionary. One copy of STF 3D and the STF 3H supplement accompanies each file order. When ordered separately, they are available for $5.00 from Data User Services Division, Customer Services (Tapes), Bureau of the Census, Washington, H.C. 20233.

Related Printed Reports
PHC80-4 Congressional Districts of the 98th Congress
This report presents statistics from the 1980 census on demographic and housing characteristics of the inhabitants of the State, congressional districts of the 98th Congress, and selected geographic areas within the congressional districts. The congressional districts are those in effect for election to the U.S. House of Representatives in November 1982. The PHC80-4 series consists of an individual report for each State and for the District of Columbia. A map is included with the State report showing congressional district boundaries, county boundaries, and the locations of selected cities. No congressional district boundaries are shown on the maps for the six States with one representative at large nor for the District of Columbia. This report is available from the U.S. Government Printing Office, Washington, D.C. 20402.

PHC80-4 Congressional Districts of the 99th Congress
This report presents statistics from the 1980 census on demographic and housing characteristics of the inhabitants of the State, congressional districts of the 99th Congress, and selected geographic areas within the congressional districts. The congressional districts are those in effect for election to the U.S. House of Representatives in November 1984. The PHC80-4 series consists of an individual report for the following States: California, Hawaii, Louisiana, Maine, Mississippi, Montana, New Jersey, New York, Texas and Washington. A map is included with the State report showing congressional district boundaries, county boundaries, and the locations of selected cities. This report is available from the U.S. Government Printing Office, Washington, D.C. 20402.

Related Machine-Readable Files
Census of Population and Housing, 1980: Summary Tape File 1D
This file contains complete count population and housing data for congressional districts of the 98th Congress.

Census of Population and Housing, 1980: Summary Tape File 3D
This file contains sample population and housing data inflated to represent the total population for congressional districts of the 98th Congress.

Census of Population and Housing, 1980: Summary Tape File 1H
This file contains complete count population and housing data for Congressional Districts of the 99th Congress.

File Availability
STF 3H is available for the 10 States in the Universe, on one reel of tape at 1600 bpi or 6250 bpi, 9-track, at a cost of $140.



STF 3H, Congressional Districts of the 99th Congress, can be ordered using the order form on the next page. When ordering please include title and file number X83600000000.









STF 3 File Description
Summary Tape File 3 (STF 3) is one of a series of summary data files available from the 1980 census. The file contains sample data inflated to represent the total population and is composed of five parts -- STF 3A, STF 3B, STF 3C, STF 3D and STF 3H. These parts have identical tables and format, except for the omission of ,100-percent counts for population and housing in STF 3B, but present the data for different geographic areas.

File Structure and Geographic Coverage
For each geographic area there will be a 12,096-character census logical record. Because of its large record size, STF 3 is divided into six segments of 2,016 characters each. These segments are identified within the geographic identification section repeated for each segment.

The first segment of each census logical record begins with 252 characters of geographic information and the suppression flags, while each subsequent segment begins with 102 characters of geographic information.

The record segments were arranged so that individual tables do not cross segment boundaries. Because of this, most segments have some padding at the end. The following chart illustrates the segmentation on STF 3.

STF 3 Segment Arrangement
Segment No. No. of Chars. (Geography) Tables No. of Chars. (Tables) No. of Chars. (Padding) Total Chars.
1 252 1-19 1,476 288 2,016
2 102 20-47 1,863 51 2,016
3 102 48-71 1,911 3 2,016
4 102 72-101 1,887 27 2,016
5 102 102-128 1,914 0 2,016
6 102 129-150 1,437 477 2,016
Total 762 1-150 10,489 846 12,096


File STF 3H
This file presents demographic and housing characteristics of the inhabitants of the 10 States that redistricted for the 99th Congress, congressional districts in these States, and selected geographic areas within the congressional districts. The congressional districts are those in effect for election to the U.S. House of Representatives in November 1984.

This file contains summary level data which follow the geographic hierarchy indicated in figure 1 below. Records are shown for the State, a congressional district, then all counties within the congressional district. All county records are followed by records for all places of 10,000+ within the congressional district and then by MCD's of 10,000+ in Maine, New Jersey and New York within the congressional district. When a county, place, or MCO is split between two or more congressional districts, the summary record for a county, place, or MCD's contained within each of the congressional districts geographic hierarchy will show only the data for that portion contained within the congressional district.

In the other 40 states, the congressional districts in effect for election to the U.S. House of Representatives in November 1934 (Districts of the 99th Congress) are the same districts that were in effect for the 98th Congress. These same data are summarized for districts of the 98th Congress in STF 3D.

Figure 1 below outlines the goegraphic hierarchy. Following Figure 1 is a discussion of each summary level in the hierarchy.

Figure 1. Geographic Hierarchy of STF 3H



The State record (Summary Level 04) contains a summary for the State or State equivalent.

The Congressional District record (Summary Level 33) contains a summary for each congressional district within the State according to the congressional district boundaries established for the 99th Congress.

The County record (Summary Level 37) contains a record for each county or county equivalent, including independent cities, or portion of county, county equivalent, or independent city within each congressional district.
The Place record (Summary Level 38) contains a summary for each place with 10,000 or more inhabitants, or portion of a place, located within the congressionaldistrict.

The MCD record (Summary Level 39) contains a summary for each county subdivision (minor civil division) with 10,000 or more inhabitants, or portion of an MCD, located within the congressional district in Maine, New Jersey and New York.


Update Information
Additional information concerning this file may be available at a later date. If you have purchased this documentation (with or without tape purchase) from the Census Bureau and wish to receive these User Notes, please complete the coupon below specifying which files and States you ordered.

Mail to: Data User Services Division Data Access and Use Staff Bureau of the Census Washington, D.C. 20233

Note: Only coupons from original copies of this documentation will be honored

Name of File: Census of Population and Housing, 1980:
Summary Tape File 3

-----------File A------------File C
State(s):

Please send me any information which might become available later concerning the file listed.

Name:
Address:
Phone:

Acknowledgments
This documentation was prepared within the Data Access and Use Staff, under the direction of James P. Curry, Chief, and Barbara J. Aldrich, Chief of its Technical Information Section. Annette Ralston was the coordinator for this file assisted by Edward Hightower, Yvonne Wade, Joann Sutton, Barbara Shugart, Jean Pope, and Mary Kilbride. It was partially adapted from materials prepared by David Silver, Stephen E. Goldman, and Eleanor Banks of Decennial Census Division, Thomas Harahush and Harold Yamauchi of Statistical Methods Division, and staff members of Data User Services Division. Support was provided through content review by staff members from Decennial Census Division, Geography Division, Housing Division, Population Division, and Statistical Methods Division.

The files should be cited as follows:

Census of Population and Housing, 1980: Summary Tape File 3A (Name of State) [machine-readable data file] / prepared by the Bureau of the Census. -Washington: The Bureau [producer and distributor], 1982.

Census of Population and Housing, 1980: Summary Tape File 3B (Name of State) [machine-readable data file] / prepared by the Bureau of the Census. -Washington: The Bureau [producer], 1982; National Planning Data Corporation and others [distributor], 1982.

Census of Population and Housing, 1980: Summary Tape File 3C [machine-readable data file] / prepared by the Bureau of the Census. -Washington: The Bureau [producer and distributor], 1982.

This technical documentation should be cited as follows:
Census of Population and Housing, 1980: Summary Tape File 3 Technical Documentation / prepared by the Data User Services Division, Bureau of the Census. -Washington: The Bureau, 1982.

For additional information concerning the files, contact Data User Services Division, Customer Services (Tapes), Bureau of the Census, Washington, D.C. 20233. Phone: (301) 763-4100.

For additional information concerning the technical documentation, contact Data User Services Division, Data Access and Use Staff, Bureau of the Census, Washington, D.C. 20233. Phone: (301) 763-2074.

For additional information concerning the subject matter of the file, contact Population Division, (301) 763-7962, or Housing Division, (301) 763-2873, Bureau of the Census, Washington, D.C. 20233.

User Notes
This section will contain information relevant to Summary Tape File 3 which becomes available after the file is released.

User Notes will be sent to all users who (1) purchased their files (or technical documentation) from the Census Bureau and (2) returned the original copy of the coupon located inside the front cover of this documentation.



User Note No. 1
Subject: Tracts Split by Standard Metropolitan Statistical Areas (SMSA's)

There are currently two instances in New England in which a tract is split by an SMSA because some of its minor civil divisions (MCD's) are inside an SMSA and some are not. This occurs because it was not known at the time the tracts were established which MCD's would be included within new SMSA's. The two instances are listed below.
Maine - Tract 0090 in Penobscot County (019) has two MCD's which are in the Bangor SMSA and one which is outside the SMSA.

Vermont - Tract 0035 in Chittenden County (007) has three MCD's which are in the Burlington SMSA and two which are outside the SMSA.

User Note No. 2
Subject: Changes in STF 3 Technical Documentation

User Note No. 3
Subject: Changes in STF 3 Technical Documentation

User Note No. 4
Subject: Income Inconsistencies
An inconsistency has been found in the income data available on STF 3. Research is currently underway to determine both the magnitude and geographic dispersion of the problem.

It appears that a small number of questionnaires were incorrectly coded resulting in an overstatement of income. Mean income, per capita income, and aggregate income are most noticeably affected.

Once we have determined the extent of the problem, we will decide if STF 3 corrections will be issued.

User Note No. 5
Subject: Additional Information on Income Data

In November 1982 we distributed User Note No. 4 which alerted users to a potential problem with the income data. Subsequent research indicates that only approximately 0.5 percent of the estimated 300,000 enumeration districts and block groups are affected by this problem.

The attachment shows for states and counties the number of respondents whose income was corrected. Not all states were affected; therefore, this listing includes only those states and counties for which corrections were made. This information is being provided to indicate the magnitude of the error for the affected areas. The column headings on this list are described below:

Column Heading Description
ST Federal Information Processing Standard (FIPS) state code.
CN FIPS county code. (This code is "0" for records containing state figures).
POP The total population count of the specified area.
CHANGED CASES The number of unweighted sample cases (individual respondents) for which income was incorrectly coded.
CHANGED WT CASE The weighted (inflated) estimate of the number of individuals whose income was incorrectly coded.
CHANGED PERCENT The percentage calculated when the figures in the column headed "CHANGED WT CASE" are divided by the figures in the column headed "POP. "
AGGREGATE CHANGE The dollar amount by which the aggregate income of individuals was corrected downward (this is always a negative correction).
PER CAPITA The dollar amount by which the per capita income was corrected downward (this is always a negative correction).
NAME The name of the state or county.


The Bureau expects to decide shortly what type of corrective action is necessary for STF 3 data products. Those decisions will be announced as soon as possible.

For more information, please refer to:

Part from Codebook 1980 SF3.pdf


User Note No. 6
Subject: Additional Information Concerning STF 3

Suppression Flags: The STF 3 data dictionary indicates that the suppression flag fields (position 205-231) are coded zero when no suppression is present. Actually, these fields are blank when no suppression is present.

Aggregate Income Flelds: Users should be aware that negative numbers may appear in some of the aggregate income fields. They appear most frequently in the aggregate nonfarm self-employment and aggregate farm self-employment income fields in Table 72; however, they may also appear in other aggregate income fields, such as aggregate family income, aggregate household income, and aggregate income. These negative income cells will have a in the leftmost position, followed by leading zeroes and the aggregate figure.

Variation In Population Count: The counts of persons in occupied housing units (Tables 100 and 104) will differ from other counts of persons not in group quarters on STF 3. The counts in Tables 100 and 104 are derived by the product of the number of persons in the unit and the housing weight. The others reflect the actual weighted count of persons.

Not Computed Cells: In Table 132, the cell labeled "Not computed" includes households with zero or negative income and units tabulated in the "No cash rent" category. In Table 139, the category "Not computed" includes households with zero or negative income only in the first category, i.e. "Less than 5,000*" The "Not computed" category for the remaining income groups will be zero.

User Note No. 7
Subject: Correction and Reissuance of STF 3 Files

STF 3A and 3C have been revised and reissued. The following is a brief explanation of each subject area corrected on the revised files.

Income in 1979
All income matrices in the affected areas have been corrected. Affected areas (i.e., EDs, BGs, tracts, places, etc.) can be identified by comparing Table 70 (Aggregate Household Income in 1979), the "total" from Table 84 (Aggregate Income in 1979 By Inmate Status) and Table 141 (Aggregate Household Income in 1979 by Tenure) on the original and corrected STF 3A files. Checking all three tables will ensure that suppression of persons data, for example, doesn't mask changes in the income data which do appear for households. Refer to User Note 5 for information on the amount of the differences in aggregate and per capita income for the states and counties affected.

The attached Data User News article (February 1983) further describes the income problem and its relation to other 1980 census sample data products.

Language Spoken At Home
The total number of persons who speak a language other than English at home may be slightly less than the figure on the original STF 3 (Table 27, Age by Language Spoken At Home and Ability to Speak English) because of corrections to the edit programs. Nationally, this decrease amounts to about 0.3 percent; the number of persons who speak Spanish dropped by approximately 0.07 percent. There is no evidence of significant geographic clustering of the revision.

Nativity
Minor corrections to the computer programs which edit the data for citizenship have resulted in slightly lower numbers of foreign-born persons in the corrected version of STF 3 (Table 33, Nativity and Place of Birth). Nationally, the difference amounts to 372 weighted persons and is concentrated primarily in California, New York, and Texas.

Place of Work
Correction of anomalies in the edit and allocation procedure for place of work and residence in 1975 has resulted in changes to the data relating to the Richmond, Virginia and Petersburg-Colonial Heights-Hopewell, Virginia SMSAs. The original STF 3 (Table 35, Residence in 1975-SMSA Level and Table 38, Place of Work-SMSA Level) overstated immigration and outcommuting for the Richmond SMSA and understated these for the Petersburg-Colonial Heights-Hopewell SMSA; the revised STF 3 contains corrected data.

Poverty Status in 1979
Minor differences between the poverty status tabulations (Tables 86 through 95) on the original STF 3 and those on the revised STF 3 are possible because of the income revisions discussed above. However, most income revisions did not affect the poverty status classification.

Residence in 1975
See "Place of Work" above.

Note: The revisions to STF 3 mean that some previously issued user notes are no longer applicable. The section of User Note No. 3 which revises the discussion on Language Spoken at Home on page 262 of the documentation should be deleted. User Note No. 4 no longer applies; the last paragraph of User Note No. 5 should be deleted.

February, 1933