U.S. flag

An official website of the United States government

Skip Header


Reference Files

Geographic Reference Files are documents that list codes for geographic entities. These include Relationship Files, Gazetteer Files, Block Assignment Files, and Tally Files.

Relationship Files describe geographic relationships over time and between types. Geographic Relationships Over Time show the relationships (comparability) for the same type of geography over different periods of time (e.g. the relationship between places in 2010 and 2000). Geographic Relationships Between Entity Types show the relationship between different types of geography for the same period (e.g. the relationships between congressional districts and places).

Gazetteer Files list geographic entities, such as county, place, and census tracts, with information on name, geographic code, population, housing unit counts, and latitude/longitude of the internal point.

Block Assignment Files (BAFs) are among the geographic products that the Census Bureau provides to states and other data users containing the small area census data necessary for legislative redistricting.

Tally Files provide the total number of geographic entities for a given area. For example, the 2010 Census National Geographic Tallies list 11,078,297 census blocks and 3,143 counties and equivalents.


All
All
  • All
  • 2025
  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
  • 2009
  • 2008
  • 2007
  • 2006
  • 2003
  • 2000
  • 1990

Geographic
"New Incorporations, Mergers, Consolidations, and Disincorporations"
View a list of the governments that have been established, merged/consolidated, or ceased to exist since 2010.


Geographic
2025 SDRP Annotation Phase Listing Files
Here are the 2025 SDRP School District Listing Files for the Annotation Phase.


Geographic
Current Address Count Listing Files
Here are the current Address Count Listing Files.


Geographic
Legal Boundary Change/Annexation Data
Review the legal boundary changes that have been reported to the BAS.


Geographic
2024 SDRP Annotation Phase Listing Files
Here are the 2024 SDRP School District Listing Files for the Annotation Phase.


Geographic
Current Address Count Listing Files
Here are the current Address Count Listing Files.


Geographic
2023 SDRP Annotation Phase Listing Files
Here are the 2023 SDRP School District Listing Files for the Annotation Phase.


Geographic
2022 SDRP Annotation Phase Listing Files
Here are the 2022 SDRP School District Listing Files for the Annotation Phase.


Geographic
2020 Address Count Listing Files
Here are the 2020 Address Count Listing Files.


Geographic
2006-2010 County Sets
The EEO county set combines multiple counties to meet the 50,000 person requirement.


Geographic
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.


Geographic
1999 MA to 2003 CBSA
This reference file shows the relationship between 1999 MAs and 2003 CBSAs.


Geographic
Geographic Classifications - County Sets
View and download reference files on county sets for 2000.


Geographic
2009 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2009 Census Bureau Region and Division Codes and State FIPS Codes.


Geographic
2009 Population Estimates FIPS Codes
These are the 2009 FIPS Codes (State, County, MCD, and Incorporated Place).


Geographic
2011 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2011 Census Bureau Region and Division Codes and State FIPS Codes.


Geographic
2011 Population Estimates FIPS Codes
These are the 2011 FIPS Codes (State, County, MCD, and Incorporated Place).


Geographic
2012 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2012 Census Bureau Region and Division Codes and State FIPS Codes.


Geographic
2012 Population Estimates FIPS Codes
These are the 2012 FIPS Codes (State, County, MCD, and Incorporated Place).


Geographic
2013 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2013 Census Bureau Region and Division Codes and State FIPS Codes.


Geographic
2013 Population Estimates FIPS Codes
These are the 2013 FIPS Codes (State, County, MCD, and Incorporated Place).


Geographic
2014 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2014 Census Bureau Region and Division Codes and State FIPS Codes.


Geographic
2014 Population Estimates FIPS Codes
These are the 2014 FIPS Codes (State, County, MCD, and Incorporated Place).


Geographic
2015 Population Estimates FIPS Codes
These are the Vintage 2015 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.


Geographic
2016 Population Estimates FIPS Codes
These are the Vintage 2016 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.


Geographic
2017 Population Estimates FIPS Codes
These are the Vintage 2017 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.


Geographic
2018 Population Estimates FIPS Codes
These are the Vintage 2018 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.


Geographic
2019 Population Estimates FIPS Codes
These are the Vintage 2019 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.


Geographic
2020 Population Estimates FIPS Codes
These are the Vintage 2020 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.


Geographic
2021 Population Estimates FIPS Codes
These are the Vintage 2021 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.


Geographic
2022 Population Estimates FIPS Codes
These are the Vintage 2022 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.


Geographic
2023 Population Estimates FIPS Codes
These are the Vintage 2023 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.


Geographic
Block Assignment Files
View the available Block Assignment files from the Geography program.


Geographic
Centers of Population
Information about the mean and median centers of population for the 2020 Census, 2010 Census and Census 2000.


Geographic
County Adjacency File
View the available County Adjaceny files from the Geography program.


Geographic
Gazetteer Files
View all the available Gazetteer files from the Geography Program.

Page Last Revised - October 24, 2024
Is this page helpful?
Thumbs Up Image Yes Thumbs Down Image No
NO THANKS
255 characters maximum 255 characters maximum reached
Thank you for your feedback.
Comments or suggestions?

Top

Back to Header