About

Topographically Integrated Geographic Encoding and Referencing (TIGER) is a series of spatial data releases managed by the US Census Bureau. Many of its smaller area geographic divisions known as Census tracts and blocks are used as a standard in spatial analyses.

TIGER has many types of spatial datasets that are released at least once a year, including:

Water bodies
Roads
Highways
Rail
Government Landmarks

States
Metropolitan Statistical Areas
Counties
Places (Aka cities/unincorporated areas)
Tracts
Block groups
Blocks

ZIP Codes (through the edges shapefiles)
Zip Code Tabulation Areas (ZCTA) - Areas dominated by one particular zip code School Districts Voting Districts Traffic Analysis Zones

The information is avaialable in an ftp server.

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