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Record Layouts

Detailed definitions of variables to help you understand our data and reference files.


2010 Census Block Relationship Files Record Layouts
Record layouts for the 2010 Census Block Relationship Files.


2010 Census Tract Relationship Files Record Layouts
Record layouts for the 2010 Census Tract relationship files which are state-based tabular files.


2010 Census Tract to 2010 PUMA Relationship File Record Layout
The record layout for the 2010 Census Tract to 2010 PUMA relationship file which is a nation-based tabular file.


2010 Census Tract to AIA Relationship File Record Layout
Record layout for the nation-based, tabular Census Tract to American Indian Area relationship file.


2010 Census Tract to Military Area Relationship File Record Layout
The record layout for the Census Tract to Military Area relationship file which is a nation-based tabular file.


2010 Census Urban Area Lists Record Layouts
Record layouts for the text and Excel files listing urban areas and urban clusters.


2010 Urban Area to 2000 Urban Area Relationship File Record Layout
Record layout for the 2010 Urban Area to 2000 Urban Area relationship file.


2010 ZIP Code Tabulation Area (ZCTA) Relationship File Record Layouts
The record layouts for the 7 types of 2010 ZIP Code Tabulation Area (ZCTA) relationship files.


2020 AIANNH Relationship File Record Layouts
The record layouts for the 2020 American Indian/Alaska Native/Native Hawaiian Areas relationship files.


2020 Census Block Relationship Files Record Layouts
Record layouts for the 2020 Census Block Relationship Files.


2020 Census Congressional District and State Legislative District Relationship File Record Layouts
The Record Layouts for 118th Congressional District and State Legislative District Relationship Files


2020 Comparability Relationship File Record Layouts
The record layouts for the 2020 comparability relationship files.


2020 Public Use Microdata Area (PUMA) Relationship Files Record Layouts
Record layouts for the 2020 Urban Area Relationship Files.


2020 Urban Area (UA) Relationship Files Record Layouts
Record layouts for the 2020 Urban Area Relationship Files.


2020 ZIP Code Tabulation Area (ZCTA) Relationship File Record Layouts
The record layouts for the 6 types of 2020 ZIP Code Tabulation Area (ZCTA) relationship files.


2022 Connecticut Relationship File Record Layouts
The record layouts for the seven types of 2022 special Connecticut relationship files.


Block Assignment Files Record Layout
Record layouts and field definitions for the Block Assignment Files.


Census 2000 Census Block Relationship Files Record Layouts
Record layouts for the 1990 to 2000 block relationship files and the 2000 collection to tabulation block relationship file.


Census 2000 Census Tract Relationship Files Record Layouts
Record layouts for the Census 2000 census tract relationship files.


Congressional Districts Relationship File Record Layout
The record layout for the Congressional Districts Relationship files.


County Adjacency File Record Layout
Record layouts and field definitions for the County Adjacency File.


County Subdivision Relationship File Record Layout
The record layout for the County Subdivision relationship file.


Gazetteer File Record Layouts
Record layouts for the 1990, 2000, 2010, and 2012 - 2022 Gazetteer Files.


Geographic Boundary Change Notes Record Layout
The record layout for the Geographic Boundary Change Notes.


Name Lookup Tables Record Layouts
Record layouts and field definitions for the Name Lookup Tables.


Place Relationship File Record Layout
The record layout for the Place Relationship file.


State Legislative District Relationship File Record Layout
The record layout for the State Legislative District Relationship files.


TIGER/Line with Selected Demographic and Economic Data Record Layouts
Record layouts for the TIGER/Line with Selected Demographic and Economic Data contain the short name and a full description of each cell.


Urban Area Relationship Files Record Layouts
Record layouts for the Urban Area relationship files with counties, county subdivisions, places, CBSAs, NECTAs, and ZCTAs.

Page Last Revised - October 8, 2021
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