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File Format and Record Layout for the 2010 Census Tract to American Indian Area Relationship File

The Census Tract to American Indian Area relationship file is a nation-based tabular file.

This relationship file identifies states and counties by FIPS (Federal Information Processing Series) codes. The file does not include the geographic names referenced by the FIPS codes. The Census Tract to American Indian Area relationship file is provided in a comma-delimited ASCII text file format.

The layouts for the Census Tract to American Indian Area Relationship File is provided below.

Column Name Maximum Length Column Description
STATEFP 2 State FIPS Code
COUNTYFP 3 County Code code
TRACTCE 6 Census Tract Code
AIANNHCE 4 American Indian Area Code
NAME 74 American Indian Area Name
TRACTAREA 12 Total Area of the Census Tract (square meters)
AREAINT 11 Total Area of the Intersection Between the Census Tract and the American Indian Area (square meters)
PERCENT_AREA 22 Percentage of Total Area of the Census Tract Covered by the American Indian Area
TRACTPOP 5 2010 Population Count of the Census Tract
POPINT 5 2010 Population Count of the Intersection Between the Census Tract and the American Indian Area
PERCENT_POP 17 Percentage of the 2010 Population Count of the Census Tract Covered by the American Indian Area
TRACATHU 4 2010 Housing Unit Count of the Census Tract
HUNT 4 2010 Housing Unit Count of the Intersecting Polygon
PERCENT_HU 20 Percentage of the 2010 Housing Unit Count of the Census Tract Covered by the American Indian Area

Source: U.S. Census Bureau | Geography | (301) 763-1128 |  Last Revised: April 04, 2013