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Proximity Census 2000 Census Block Database

The Proximity Census 2000 Census Block Database contains a selected set of 160 Census 2000 demographic data items for each more that 8.2 million census blocks. Organized on a state-by-state basis, the database has been derived from the Census 2000 Summary File data. Use these data with Proximity software including CommunityViewer, Point-to-Block, custom developed tools or your own software.

See about related Census 2010 Census Block Database

Companion Databases. Too much or not the right geographic detail? The demographic subject matter contained in the C2KBLK database are also immediately available on a national scope, similarly structured, for counties, cities, school districts, traffic analysis zones, ZIP code areas, census tracts, block groups, and other geographic areas. Do you need time-series data or data regarding demographic change over time? Proximity has companion geographic crosswalk files that enable you, or Proximity as a service, to develop data, say from the 1990 Census, for geography corresponding to Census 2000 geography.

Ready to Map. The C2KBLK database is organized as in highly transportable dBase file structure. Integrate these data directly with your existing GIS shapefiles using your own software or the Proximity dBMerge software. Integrate the C2KBLK demographics into the census block shapefiles (see

Examples of mapping/geospatial analysis using census block geodemographics:
  -- Houston, TX MSA
  -- Texas Statewide
  -- Santa Clara County, CA

Uses. The C2KBLK database uniquely meets a wide range of reference, planning, analysis, and data linkage needs. Some examples of uses are presented below.

Market Size/Composition. Use these maximum geographic granularity demographic data to target your marketing, sales, operations, logistics, and related customer/market -oriented needs.

Education. Here a two examples of using these data for K-12 education applications. Develop demographics for existing or prospective new attendance areas. Learn what the size of the population service area is under different attendance area geographic scenarios.

For districts that change boundaries since the 1999-2000 school year (date for school district boundary data in Census 2000 references), you can tabulate the size and characteristics of the new district configuration and assess implication since changes from previous boundaries.

Civil Rights Issues. The single year of age detail, by gender, in the C2KBLK database provide an easily accessible database useful in wide ranging applications involving civil rights cases. It becomes a relatively straightforward application to determine the demographic size and composition of any study area.

Health. The Census 2000 data are used in many application areas as "denominator" data. That is, by knowing the size of the population or housing served, health analysts can better examine the implications of magnitude associate with health-related measures that are often difficult to measure directly. Areas subject to analysis for health-related reasons are sometimes defined in a fluid manner making the block level granularity ideal to develop denominator data for health cachement areas.

Environment. The impact of pollutants along a stream or coastal area can often be measured in terms of toxicity to the geographic area exposed. The census block data enable analysts to examine the size of particular types of population adjacent to environmental impact sites.

Disaster Planning. The C2KBLK database is a unique way to be able to determine the impact of any type of disaster with near pin-point accuracy -- and dynamically.

Aggregate Block Data. Proximity has used the C2KBLK file to develop school district and traffic analysis zone data aggregates. Similar aggregate data can be developed for study areas based radii, corridors, or geographic correspondence of block within an area. Aggregate the Census 2000 demographics contained in the data record to your target geography. The data record contains the latitude-longitude as well as the full sequence of geocodes to enable these types of data aggregation.

Geographic Relationships. Determine, for example, what ZIP code areas are partly/wholly contained with a city, metropolitan area, county, custom study area, or many other types of geography. Use the block correspondence list to enable your software to aggregate non-census data to block or any of these other areas.

Content. Each data record contains the items as described in the table presented at

Structure. The database is organized in a very transportable and ready-to-use dBase structure. Geographic identifier fields make it easy to link the data records with other files and/or aggregate the data records to higher level summaries.

Support. Proximity supports usage of the C2KBLK in several ways. Expert assistance is available to answer any question about the content and provide assistance with technical processing issues and analytically-oriented applications. Several ProximityOne software components are available to facilitate applications. Licensees will receive updates to the database when the final Census 2000 Summary File 1 data are released thus reflecting some minor subject matter updates with the dominant upgrade being the assignment of urban/rural classifications/coding. The database will continue to have companion database development in regards to geographic derivative files from the TIGER/Line files and congruent availability of Census 2000 sample based data from Summary File 3 and other files.

How to Order. The C2KBLK database may be ordered under a perpetual usage, non-exclusive license. Single user and site licenses are available. The database may be acquired on a state-by-state or national set of state files. The database price for a site license to the national file set is less than 1/10th of one cent per geographic area. To acquire an order form, please contact Proximity (add a note requesting C2KBLK ordering information).

Census 2000 Tabulation Areas. The table presented below summarizes the number of Census 2000 tabulation areas for selected types of geography. This information might be useful for users interested in C2K databases for selected state(s). The "DP2000E" subject matter databases are available from Proximity for each of these types of geographic areas are well as places (incorporated cities and census designated places), counties, school districts, traffic analysis zones, and 5-digit ZIP Code tabulation areas.

State Code State Name Census 2000 Census Tracts Census 2000 Block Groups Census 2000 Tabulation Blocks
01 Alabama 1,081 3,329 175,220
02 Alaska 158 533 21,874
04 Arizona 1,107 3,570 158,294
05 Arkansas 624 2,135 141,178
06 California 7,049 22,133 533,163
08 Colorado 1,062 3,278 141,040
09 Connecticut 819 2,620 53,835
10 Delaware 197 502 17,483
11 District of Columbia 188 433 5,674
12 Florida 3,154 9,112 362,499
13 Georgia 1,618 4,788 214,576
15 Hawaii 286 646 18,990
16 Idaho 280 954 88,452
17 Illinois 2,966 9,843 366,137
18 Indiana 1,414 4,798 201,321
19 Iowa 793 2,634 168,075
20 Kansas 727 2,299 173,107
21 Kentucky 994 3,157 122,141
22 Louisiana 1,106 3,509 139,867
23 Maine 348 1,143 56,893
24 Maryland 1,218 3,678 79,128
25 Massachusetts 1,367 5,053 109,997
26 Michigan 2,757 8,450 258,925
27 Minnesota 1,303 4,082 200,222
28 Mississippi 605 2,148 136,150
29 Missouri 1,320 4,540 241,532
30 Montana 270 874 99,018
31 Nebraska 503 1,591 133,692
32 Nevada 487 1,245 60,831
33 New Hampshire 273 874 34,728
34 New Jersey 1,950 6,510 141,342
35 New Mexico 456 1,413 137,055
36 New York 4,907 15,079 298,506
37 North Carolina 1,563 5,271 232,403
38 North Dakota 227 630 84,351
39 Ohio 2,941 9,354 277,807
40 Oklahoma 990 2,901 176,064
41 Oregon 755 2,490 156,232
42 Pennsylvania 3,135 10,387 322,424
44 Rhode Island 234 821 21,023
45 South Carolina 867 2,859 143,919
46 South Dakota 235 688 77,951
47 Tennessee 1,261 4,014 182,203
48 Texas 4,388 14,463 675,062
49 Utah 496 1,481 74,704
50 Vermont 179 530 24,824
51 Virginia 1,541 4,749 145,399
53 Washington 1,318 4,825 170,871
54 West Virginia 466 1,588 81,788
55 Wisconsin 1,333 4,388 200,348
56 Wyoming 127 398 67,264
United States 65,443 208,790 8,205,582
72 Puerto Rico 861 2,477 56,781
United States and Puerto Rico 66,304 211,267 8,262,363

About ProximityOne. ProximityOne develops geographic-demographic-economic data and analytical tools and helps organizations knit together and use diverse data in a decision-making and analytical framework. We develop custom demographic/economic estimates and projections, develop geographic and geocoded address files, and assist with impact and geospatial analyses. Wide-ranging organizations use our tools (software, data, methodologies) to analyze their own data integrated with other data. Contact us (888-364-7656) with questions or for additional information.

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