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OnTheMap Geographic Sources

Layer Name

Geographic Data Source

Contact

111th U.S. Congressional Districts

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Airports

Federal Aviation Administration

http://www.bts.gov/programs/geographic_information_services/

Alaska Native Regional Corp. (ANRC)

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Amtrak Stations

Federal Railroad Administration

http://www.fra.dot.gov/

Census Block Groups

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Census Tracts

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Community Colleges

Employment and Training Administration

http://www.doleta.gov/wired/regions/

Counties

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

County Subdivisions1

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Greenspace (Parks, Cemeteries, Golf Courses)

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Interstates, Major Highways, and Local Roads

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Lakes and Rivers

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Metropolitan/Micropolitan Areas (CBSA)

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Military Bases

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

One-Stop Career Centers2

Employment and Training Administration

http://www.doleta.gov/wired/regions/

Places (Cities, CDPs, etc.)1

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Railroads

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

School Districts (Unified/Elementary and Secondary)

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Schools (Primary and Secondary)

National Center for Education Statistics

http://nces.ed.gov/

State Legislative Districts (Upper and Lower)

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

States

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Traffic Analysis Zones (TAZ)3

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Tribal Lands and Tribal Subdivisions

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Universities and Community Colleges2

National Center for Education Statistics

http://nces.ed.gov/ipedspas/

Water

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

WIRED Regions (Gen. I, II, and III)

Employment and Training Administration

http://www.doleta.gov/wired/regions/

Workforce Investment Areas (WIA)

The Local Employment Dynamics (LED) Partnership

CES.local.employment.dynamics@census.gov

ZIP Codes (ZCTA)

Census Bureau TIGER files (2008)

http://www.census.gov/geo/www/tiger/ or geo.tiger@census.gov

Notes:

1. Additional information from the Census Bureau's Geography Division on the different classifications of County Subdivisions and Places can be found at http://www.census.gov/geo/www/geoareas/placecousub2008.html.

2. Address information on the locations of One-Stops and Universities and Community Colleges were provided by the listed sources. These addresses were then geocoded to a latitude/longitude by LED. In some cases the point location is approximate due to nonspecific or unlocatable addresses.

3. Traffic Analysis Zones (TAZ) were collected by the U.S. Census Bureau for the 2000 Decennial Census and do not reflect changes in these areas since 2000.

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