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Data & Maps
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Resource Library
Geography Reference Files
Geography Reference Files
Reference files give details about particular geographic areas. Reference files variously inform users of legal changes to entities, geographic boundary change notes, FIPS codes for places (and separately for school districts), and characteristics such as land area.
2006-2010 County Sets
The EEO county set combines multiple counties to meet the 50,000 person requirement.
Block Assignment Files
View the available Block Assignment files from the Geography program.
Centers of Population
Information about the mean and median centers of population for the 2020 Census, 2010 Census and Census 2000.
County Adjacency File
View the available County Adjaceny files from the Geography program.
Gazetteer Files
View all the available Gazetteer files from the Geography Program.
Guide to 2010 State and Local Census Geography
These pages provide an overview of census geography and have information about key geographic concepts for each state as it relates to the 2010 Census.
Historical State Centers of Population by State for 1880-2020 Censuses
The concept of the center of population as used by the U.S. Census Bureau is that of a balance point.
Historical State Centers of Population by Year for 1880-2020 Censuses
Name Lookup Tables
View the available name look up tables from the Geography program.
National Centers of Population for the 1790 - 2020 Censuses
The mean centers of population of the United States from the first Census of Population in 1790 to 2020.
Relationship Files
View all the available relationship files from the Geography program.
State Area Measurements and Internal Point Coordinates
This table provides land, water and total area measurements for the 50 states, the District of Columbia, Puerto Rico and the Island Areas.
Tallies
View the available tallies from the Geography program.
Page Last Revised - October 8, 2021
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