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Record Layouts

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Record Layouts

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

Technical Documentation

2010 Census Block Relationship Files Record Layouts

Record layouts for the 2010 Census Block Relationship Files.
Technical Documentation

2010 Census Tract Relationship Files Record Layouts

Record layouts for the 2010 Census Tract relationship files which are state-based tabular files.
Technical Documentation

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.
Technical Documentation

2010 Census Tract to AIA Relationship File Record Layout

Record layout for the nation-based, tabular Census Tract to American Indian Area relationship file.
Technical Documentation

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.
Technical Documentation

2010 Census Urban Area Lists Record Layouts

Record layouts for the text and Excel files listing urban areas and urban clusters.
Technical Documentation

2010 Urban Area to 2000 Urban Area Relationship File Record Layout

Record layout for the 2010 Urban Area to 2000 Urban Area relationship file.
Technical Documentation

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.
Technical Documentation

2020 AIANNH Relationship File Record Layouts

The record layouts for the 2020 American Indian/Alaska Native/Native Hawaiian Areas (AIANNH) relationship files.
Technical Documentation

2020 Census Block Relationship Files Record Layouts

Record layouts for the 2020 Census Block Relationship Files.
Technical Documentation

2020 Comparability Relationship File Record Layouts

The record layouts for the 2020 comparability relationship files.
Technical Documentation

2020 Public Use Microdata Area (PUMA) Relationship File Record Layouts

Record layouts for the 2020 Public Use Microdata Area (PUMA) Relationship Files.
Technical Documentation

2020 Urban Area (UA) Relationship File Record Layouts

Record layouts for the 2020 Urban Area Relationship Files.
Technical Documentation

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.
Technical Documentation

2022 Connecticut Relationship File Record Layouts

The record layouts for the seven types of 2022 special Connecticut relationship files.
Technical Documentation

2024 Connecticut Relationship File Record Layouts

The record layouts for the three types of 2024 special Connecticut relationship files.
Technical Documentation

2025 Geographic Reference File (GRF) Record Layouts

Record layouts for the 2025 Geographic Reference Files (GRFs).
Technical Documentation

Address Count Listing Files Record Layouts and File Naming Convention

File naming convention and record layouts for the Address Count Listing Files.
Block Assignment Files Record Layout

Record layouts and field definitions for the Block Assignment Files.
Technical Documentation

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.
Technical Documentation

Census 2000 Census Tract Relationship Files Record Layouts

Record layouts for the Census 2000 census tract relationship files.
Technical Documentation

Congressional District and State Legislative District Relationship File Record Layouts

The Record Layouts for Congressional District and State Legislative District Relationship Files.
Technical Documentation

Congressional Districts Relationship File Record Layout

The record layout for the Congressional Districts Relationship files.
Technical Documentation

Core Based Statistical Area (CBSA) Relationship File Record Layouts

The record layouts for core based statistical area relationship files.
County Adjacency File Record Layout

Record layouts and field definitions for the County Adjacency File.
Technical Documentation

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 - 2024 Gazetteer Files.
Technical Documentation

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.
Technical Documentation

Place Relationship File Record Layout

The record layout for the Place Relationship file.
Technical Documentation

State Legislative District Relationship File Record Layout

The record layout for the State Legislative District Relationship files.
Technical Documentation

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.
Technical Documentation

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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