Documentation: Census 2010
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Publisher: U.S. Census Bureau
Survey: Census 2010
Document: Summary File 1 Technical Documentation
citation:
Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
Summary File 1 Technical Documentation
Chapter 1. Abstract
1.1. Citation
Census 2010 Summary File 1 [name of state1 or United States]/prepared by the U.S. Census Bureau, 2011.

footnotes:


1This includes the District of Columbia and Puerto Rico.
1.2. Type of File
Summary statistics.

1.3. Subject Content
Summary File 1 (SF 1) contains the data compiled from the questions asked of all people and about every housing unit. Population items include sex, age, race, Hispanic or Latino origin, household relationship, household type, household size, family type, family size, and group quarters. Housing items include occupancy status, vacancy status, and tenure (whether a housing unit is owner-occupied or renter-occupied).

There are 177 population tables (identified with a " P" ) and 58 housing tables (identified with an " H" ) shown down to the block level; 82 population tables (identified with a " PCT" ) and 4 housing tables (identified with an HCT) shown down to the census tract level; and 10 population tables (identified with a PCO) shown down to the county level, for a total of 331 tables. There are 14 population tables and 4 housing tables shown down to the block level and 5 population tables shown down to the census tract level that are repeated by the major race and Hispanic or Latino groups.2.

SF 1 includes population and housing characteristics for the total population, population totals for an extensive list of race (American Indian and Alaska Native tribes, Asian, and Native Hawaiian and Other Pacific Islander) and Hispanic or Latino groups, and population and housing characteristics for a limited list of race and Hispanic or Latino groups. Population and housing items may be cross-tabulated. Selected aggregates and medians also are provided. A complete listing of subjects in this file is found in the Subject Locator chapter.

footnotes:


2These selected tables are repeated by the following: White alone; Black or African American alone; American Indian and Alaska Native alone; Asian alone; Native Hawaiian and Other Pacific Islander alone; Some other race alone; Two or more races; Hispanic or Latino; and White alone, not Hispanic or Latino. One matrix, PCT12, is also repeated by Black or African American alone, not Hispanic or Latino; American Indian and Alaska Native alone, not Hispanic or Latino; Asian alone, not Hispanic or Latino; Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino; Some other race alone, not Hispanic or Latino; and Two or more races, not Hispanic or Latino.

1.4. Geographic Content
Summary File 1 (SF 1) is released as individual files for each of the 50 states, the District of Columbia, and Puerto Rico, and for the United States. The tables (matrices) are identical for all files, but the geographic coverage differs. Because urban and rural areas will not be available until 2012 as part of the urban/rural update file, a national update file will be released in late 2011 that provides all SF 1 data without the urban and rural components.

1.4.1. State Files
SF 1 for states, the District of Columbia, and Puerto Rico provides data for these areas and their subareas in hierarchical sequence down to the block level (P and H tables), the census tract level (PCT and HCT tables), or the county level (PCO tables), depending on the detail shown in the table. The file structure includes, but is not limited to the following geographic levels:

State3
  County4
    County subdivision5
      Place (or place part)
        Census tract
          Block group
            Block
American Indian and Alaska Native area and Hawaiian home land

SF 1 for states also has inventory (complete) summaries for the following geographic levels:

Place
Metropolitan statistical area (or state portion)
Micropolitan statistical area (or state portion)
Congressional district (111th Congress)
State legislative district
School district
Consolidated city
ZIP Code® tabulation area (ZCTA™) (or state portion)

1.4.2. National Files (National Update and Urban/Rural Update)
SF 1 national files provide summaries for the entire United States. The file structure includes, but is not limited to the following geographic levels:
United States
Region
Division
State
 County
  County subdivision
   Place (or place part)
Metropolitan statistical area
Micropolitan statistical area
Urban area (Urban/Rural Update file only)
Congressional district (111th Congress)
State legislative district
American Indian and Alaska Native area and Hawaiian home land
ZIP Code® tabulation area (ZCTA™)

footnotes:


3This includes states, the District of Columbia, or Puerto Rico.
4Parish in Louisiana, borough or census area in Alaska, and municipio in Puerto Rico; in Maryland, Missouri, Nevada, and Virginia, one or more cities are independent of counties and are treated as statistical equivalents of counties; the entire District of Columbia, which has no counties, is treated as a county equivalent.
5In Puerto Rico, some subdivisions (barrios-pueblos and barrios) are divided into subminor civil divisions (subbarrios).


1.5. User Updates
User updates inform data users about corrections, errata, and related explanatory information. However, sometimes this information becomes available too late to be reflected in the product or related documentation. User updates are available on the U.S. Census Bureaus Internet site at www.census.gov

1.6. Related Products
Listed below are the other related products that will be made available through American FactFinder.Some products will be available as printed reports.

2010 Census Summary File 2 (SF 2). Files containing cross-tabulations of information on age, sex, household relationship, household type, household size, family type, family size, group quarters population, occupancy status, tenure, etc., for many race and Hispanic or Latino groups and American Indian and Alaska Native tribes. The file for each state includes data down to the census tract level, if there are 100 or more people of the specified population group in a given geographic area. Other tabulations are available only down to the county level (planned release: December 2011-April 2012). SF 2 will be updated with national-level data (planned release: May 2012) and urban/rural data (planned release: January 2013). Files and reference maps will be made available through American FactFinder.

2010 Census CPH-1, Summary Population and Housing Characteristics report series. One report for the United States, each state, the District of Columbia, and Puerto Rico providing selected data and maps for the state, counties, places (incorporated places and census designated places), county subdivisions, American Indian and Alaska Native areas, Hawaiian home lands, urbanized areas, metropolitan areas, and micropolitan areas. Available only on the Internet in Portable Document Format (PDF) (planned release: 2012).

2010 Census CPH-2, Population and Housing Unit Counts report series. One report for the United States, each state, the District of Columbia, and Puerto Rico providing 2010 Census and selected historical population and housing unit counts and maps for the state, counties, places (incorporated places and census designated places), county subdivisions, urban areas (urbanized areas and urban clusters), metropolitan areas, and micropolitan areas. Available as a printed report and on the Internet in PDF (planned release: 2013).
For more information on 2010 Census data products, contact the Census Bureaus Customer Services Center at 1-800-923-8282 or 301-763-INFO (4636).