Description:

"Census blocks are small areas bounded on all sides by visible features such as streets, roads, streams, and railroad tracts, and by invisible boundaries such as city, town, township, and county limits, property lines, and short, imaginary extensions of streets and roads." A Census block group "is a cluster of blocks having the same first digit of their three-digit identifying numbers within a census tract or block numbering area (BNA). For example, BG 3 within a census tract or BNA includes all blocks numbered between 301 and 397." (p.9)

URLs/Downloads:

R8_CBG_HTM.XML

Record Details:

Record Type:SPATIAL

Product Published Date:11/01/2005

Record Last Revised:01/25/2006

Record ID: 142348

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Related Organizations:

Role :DISTRIBUTOR

Organization Name :US EPA REGION 8 TMS-ISP

Primary Phone Number :3133026628

Fax Number :3033127554

Primary Email :hermann.karl@epa.gov

Mailing Address :999 18th Street, Suite 300

Citation :Denver

State :CO

Zip Code :802022466

Quality Assurance:

Title :BLOCK GROUP BONDARIES AND DEMOGRAPHIC DATABASE AND COVERAGE

Data Use & Constraints :None