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Group Quarters Mapper

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Developed in Association with
PrisonersoftheCensus.org


Group Quarters Mapper

The initial three maps in this  interactive map application show the population living in group quarters based on the 2000 census. Map 1 displays the institutionalized population confined to correctional facilities. Map 2 shows the population living in student dorms  and Map 3 shows the population residing in military quarters.

Additional maps include census data on income, housing, language, and education. Change maps by clicking the drop-down menu under "Compare Maps" to the left of the map window. 

Maps 25 and 26 show state legislative district boundaries themed by correctional population by district. Use the INFO  tool to query for correctional population percentages by district.

Why has FairData developed an interactive map around this seemingly mundane set of group quarters census variables? For some answers and detailed analysis, visit the Prison Policy Initiative's website PrisonersoftheCensus.org.

 

To maximize the viewable area, toggle off the history folder.  Map links can be e-mailed or bookmarked for future reference. Use the arrow buttons on your browser to compare previously viewed maps. Click the HELP icon for additional assistance.

NOT COMPATIBLE WITH FIREFOX 1.5 (click for details)

   Group Quarters Mapper (national scale map-- zoomable to street-level)

    Google-FairData Base Map  (start with a Google map interface)

The Group Quarters Mapper is based on Census 2000 Summary File 1 data, which makes it ideal for looking at how group quarters populations impact census data. Unfortunately, Census 2000 did not always place group quarters in the correct location. Facilities are sometimes in the wrong block, wrong tract, wrong town or even occasionally in the wrong county. Care should therefore be taken when using the mapper or the shapefiles for non-Census 2000 purposes.

 Many of the misplaced institutions are mentioned in news stories listed in the bibliography (http://www.prisonersofthecensus.org/bibliography.shtml) on PrisonersoftheCensus.org. Many but not all of the geocoding errors were reported to the Census and corrected as part of the Count QuestionResolution program (http://www.census.gov/prod/cen2000/notes/). The Census provides corrected population and group quarters counties for states, counties and towns, and  a spreadsheet for each state (organized by fips code) that identifies the corrected counts down to the block level. Users that need positional accuracy are advised to compare the block numbers in these Count Question Resolution reports with the block numbers of the
institutions they are attempting to locate.

Map 1 (Default map) -- Population in Correctional Facilities

At a scale of about 5 miles,  the block group population counts for persons living in correctional facilities are displayed in purple boxes.

Select the ZOOM TO button and click on the map to display population and group quarters data at the block group level in a table below the map image. Select the INFO tool and then click on the map for additional information across all layers of geography.

  Google Earth

-- themed file that displays U.S. correctional population by block
    (for blocks with 50 or more residents incarcerated)

See this interactive table developed by the Prison Policy Initiative for detailed county-level breakouts by race and ethnicity.

Downloads:

Note: The files referenced below are compressed using WinZip and include field headers using Maptitude nomenclature. These files include all of P37 and P38 in the SF1 file.

Nationwide block group-level group quarters dataset  (csv format)

Separate files with block-level data for all 50 states:

 Nationwide block-level  group quarters dataset   (csv format)

Nationwide block centroid  group quarters extract:

ESRI  shapefile (9 megs includes .csv file with non-truncated field names)

Maptitude

.CSV file

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 2 -- Population in Student Dorms

At a scale of about 5 miles,  block group population counts for students living in college dorms are displayed in purple boxes.

Map 3 -- Population in Military Quarters

At a scale of about 5 miles,  block group population counts for persons  living in military barracks or quarters are  displayed in purple boxes.

Map 4 -- Median Household Income (1999)

At a scale of about 5 miles, block group median household income  is displayed in purple boxes

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 5 -- Population Below Poverty

Source: Census 2000 Summary File 3 (SF 3) Sample Data

At a scale of about 5 miles, block group population counts for persons living in poverty are displayed in purple boxes.

Map 6 -- Population Under 18 Below Poverty

Source: Census 2000 Summary File 3 (SF 3) Sample Data

(Note: Figures for persons under 18 for whom poverty status is determined differ slightly from published figures on "related children under 18.")

County Rankings are out of 3,121 counties containing 200 or more persons under 18.(1= worst)
Download county and city poverty data from Children's Defense Fund

Download nationwide block group poverty data from FairData  (Maptitude-compatible, field labels are in .dcc file) (zipped file 2 megabytes)

At a scale of about 5 miles, block group population counts for children living in poverty are displayed in purple boxes.

Map 7 --  Female Householder (single-parent) with own children

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

At a scale of about 5 miles, block group female single parent household counts are displayed in purple boxes.

Map 8 -- Percent Black (single-race, all ages)

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 9 -- Percent Latino (any race, all ages)

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 10 -- Percent Native American (single- race, all ages)

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 11 -- Percent Asian (single-race, all ages)

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 12 -- Housing Tenure (renters and homeowners)

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 13 -- Median Home Value (by census tract)

At  scales below 10 miles, check the box "Census Tract (High). Median value for owner-occupied houses by census tract is displayed in purple boxes.  Bar charts break out the median value by race.

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 14 --  5-17 Limited English-Speaking Ability (Spanish speakers only)

Maps 11 and 12 are color-coded at the block group level only.  Color coding is not applied to the county or tract levels (75-200-mile scale), since the absolute numbers depicted by the dots are more meaningful . The dots are scattered randomly by tract or county, and do not represent specific population centers..

ZOOM IN or use the FIND button for block group level analysis (i.e. a scale of  about 0 to 50 miles)

At the tract level, scaled blue dots represent persons (50 and higher) with limited English-speaking ability; and at the county level scaled red dots represent persons (100 and higher) with limited English speaking ability. At a scale of about 10 miles, the actual block-group level numbers are displayed in purple boxes.

Color coding shows the percentage of Spanish speakers who either "do not speak English well" or "do not speak English at all".  At a scale of about 10 miles, block group population counts for these two limited English categories are displayed in purple boxes.

Note: Some official definitions (for instance, Voting Rights Act Sec. 203 language minority coverage) extend the term "limited English"  to include persons who "speak English well".  Under these interpretations,  just one category  -- "Speak English Very Well" -- defines  persons who are considered proficient in English.

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 15 --  18-64 Limited English-Speaking Ability (Spanish speakers only)

See above

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 16 --  Civilian Population 16-19, Not Enrolled in School and No Degree (Drop-outs)

Source:Census 2000 Summary File 3 (SF 3) Sample Data

Map 17 --  Civilian Population 16-19, Not Enrolled in School and Unemployed or Not in Labor Force

Source:Census 2000 Summary File 3 (SF 3) Sample Data

Map 18 -- Percent Undercount

At a scale of about 5 miles, block group undercounted population  (positive numbers -- persons missed) or overcounted population (negative numbers -- persons counted twice) is displayed in purple boxes

Source: Adjusted PL94-171 file and Census 2000 Summary File (SF 1)  Data

Note: Undercount rates are calculated after removing the group quarters population. The Census Bureau did not adjust for this population because it was excluded from the Accuracy and Coverage Evaluation.

Map 19 --  Households without a vehicle

At a scale of about 5 miles, block group counts of households without a vehicle are displayed in purple boxes.

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 20 --  Population 25 and over  without a high school degree

At a scale of about 5 miles, the  block group-level population 25 and over without a high school diploma is played in purple boxes.

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 21 --  Foreign Born Non-citizen Population (any race or ethnicity, all ages)

At a scale of about 5 miles, the block group count of foreign born non-citizens is displayed in purple boxes. Percentage calculations are based on the total population. (all ages) Note: A similar block-group level map based on single-race/ethnicity or voting age population cannot be produced due to data suppression for many block groups.

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 22 -- Population Ages 15 to 24

At a scale of about 5 miles, the  block group-level population age 15 to 24  is displayed in purple boxes.

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 23 -- Age 65+

Source: Census 2000 Summary File 1 (SF 1) 100-Percent Data

Map 24 -- Population Ages 21-64 with a disability

Source: Census 2000 Summary File 3 (SF 3) Sample Data

Map 25 -- Correctional Population by State House District

Map 26 -- Correctional Population by State Senate District

 

 

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