Data Dictionary: ACS 2009 -- 2011 (3-Year Estimates)
you are here: choose a survey survey data set table details
Data Source: U.S. Census Bureau
Table: B25121. Household Income In The Past 12 Months (In 2011 Inflation-Adjusted Dollars) By Value [106]
Universe: Universe: Owner-occupied housing units
Table Details
B25121. Household Income In The Past 12 Months (In 2011 Inflation-Adjusted Dollars) By Value
Universe: Universe: Owner-occupied housing units
Variable Label
B25121001
B25121002
B25121003
B25121004
B25121005
B25121006
B25121007
B25121008
B25121009
B25121010
B25121011
B25121012
B25121013
B25121014
B25121015
B25121016
B25121017
B25121018
B25121019
B25121020
B25121021
B25121022
B25121023
B25121024
B25121025
B25121026
B25121027
B25121028
B25121029
B25121030
B25121031
B25121032
B25121033
B25121034
B25121035
B25121036
B25121037
B25121038
B25121039
B25121040
B25121041
B25121042
B25121043
B25121044
B25121045
B25121046
B25121047
B25121048
B25121049
B25121050
B25121051
B25121052
B25121053
B25121054
B25121055
B25121056
B25121057
B25121058
B25121059
B25121060
B25121061
B25121062
B25121063
B25121064
B25121065
B25121066
B25121067
B25121068
B25121069
B25121070
B25121071
B25121072
B25121073
B25121074
B25121075
B25121076
B25121077
B25121078
B25121079
B25121080
B25121081
B25121082
B25121083
B25121084
B25121085
B25121086
B25121087
B25121088
B25121089
B25121090
B25121091
B25121092
B25121093
B25121094
B25121095
B25121096
B25121097
B25121098
B25121099
B25121100
B25121101
B25121102
B25121103
B25121104
B25121105
B25121106
Relevant Documentation:
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2009-2011 Summary File: Technical Documentation.
 
Income of Households
This includes the income of the householder and all other individuals 15 years old and over in the household, whether they are related to the householder or not. Because many households consist of only one person, average household income is usually less than average family income. Although the household income statistics cover the past 12 months, the characteristics of individuals and the composition of households refer to the time of interview. Thus, the income of the household does not include amounts received by individuals who were members of the household during all or part of the past 12 months if these individuals no longer resided in the household at the time of interview. Similarly, income amounts reported by individuals who did not reside in the household during the past 12 months but who were members of the household at the time of interview are included. However, the composition of most households was the same during the past 12 months as at the time of interview.

Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2009-2011 Summary File: Technical Documentation.
 
Value
The data on value (also referred to as "price asked" for vacant units) were obtained from Housing Question 16 in the 2011 American Community Survey. The question was asked at housing units that were owned, being bought, vacant for sale, or sold not occupied at the time of the survey. Value is the respondent's estimate of how much the property (house and lot, mobile home and lot, or condominium unit) would sell for if it were for sale. If the house or mobile home was owned or being bought, but the land on which it sits was not, the respondent was asked to estimate the combined value of the house or mobile home and the land. For vacant units, value was the price asked for the property. Value was tabulated separately for all owner-occupied and vacant-for-sale housing units, as well as owner- occupied and vacant-for-sale mobile homes.

The value of a home provides information on neighborhood quality, housing affordability, and wealth. These data provide socioeconomic information not captured by household income and comparative information on the state of local housing markets. The data also serve to aid in the development of housing programs designed to meet the housing needs of persons at different economic levels.
Adjusting Value for Inflation
Since value collected before 2008 is the only dollar amount captured on the questionnaire in specified intervals, the category boundaries for previous years are not adjusted for inflation. In the comparison profiles, however, the median value is adjusted for inflation by multiplying a factor equal to the average annual CPI-U-RS factor for the current year, divided by the average annual CPI-U-RS factor for the earlier/earliest year.
Median and Quartile Value
The median divides the value distribution into two equal parts: one-half of the cases falling below the median value of the property (house and lot, mobile home and lot, or condominium unit) and one-half above the median. Quartiles divide the value distribution into four equal parts. Median and quartile value are computed on the basis of a standard distribution. (See the "Standard Distributions" section under "Appendix A.") Median and quartile value calculations are rounded to the nearest hundred dollars. Upper and lower quartiles can be used to note large value differences among various geographic areas. (For more information on medians and quartiles, see "Derived Measures.")

Aggregate Value
Aggregate value is calculated by adding all of the value estimates for owner occupied housing units in an area. Aggregate value is rounded to the nearest hundred dollars. (For more information on aggregates, see "Derived Measures.")
Question/Concept History
The 1996-1998 American Community Survey question provided a space for the respondent to enter a dollar amount. From 1999-2007 the question provided 19 pre-coded response categories from "Less than $10,000" to "$250,000 or more - Specify.'" Starting in 2004, value was shown for all owner-occupied housing units, unlike from1996-2003 in which value was shown only for specified owner-occupied housing units. Changes introduced in 2008 were removing the pre-coded response categories and adding a write-in box for the respondent to enter the property value amount in dollars, and revising the wording of the question to ask, "About how much do you think this house and lot, apartment, or mobile home (and lot, if owned) would sell for if it were for sale?"
Limitation of the Data
The Census Bureau tested the changes introduced to the 2008 version of the value question in the 2006 ACS Content Test. The results of this testing show that the changes may introduce an inconsistency in the data produced for this question as observed from the years 2007 to 2008, see "2006 ACS Content Test Evaluation Report Covering Property Value" on the ACS website http://www.census.gov/acs.

Comparability
Caution should be used when comparing American Community Survey data on value from the years 2008 and after with pre-2008 ACS data. Changes made to the value question between the 2007 and 2008 ACS involving the response option may have resulted in an inconsistency in the value distribution for some areas. In 2007 and previous years, the ACS value question included categorical response options with a write-in for values over $250,000. Beginning in 2008, the response option became solely a write-in.
Caution should also be used when comparing value data from the ACS produced in 2008 or later with Census 2000 value data. The 2008 or later ACS provides solely a write-in response option while Census 2000 collected data in categories. Additionally, Census 2000 tables on value were released for both total owner-occupied housing units and specified owner-occupied housing units, thus comparisons can be made only when comparing the same universes between the two data sets.