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2010 Census Tract Relationship Files Record Layouts
2010 Census Tract Relationship Files Record Layouts
Tract relationship files are state-based tabular files. Areal relationships between tracts can be determined by using commercially available GIS software with the Census Bureau's TIGER/Line shapefiles.
These tract relationship files identify states and counties by FIPS (Federal Information Processing Series) codes. These files do not include the geographic names referenced by the FIPS codes. Tract relationship files are provided in a comma-delimited ASCII text file format.
The layouts for the Census Tract Relationship Files are provided below. Also available in separate text files are the header information for the Census Tract Relationship Files, 2000 Substantially Changed Census Tracts Files, and 2010 Substantially Changed Census Tracts Files. Tract relationships may be one-to-one, many-to-one, one-to-many, or many-to-many.
2010 Census Tract Relationship File Layout
| Column Name | Maximum Length | Column Description |
|---|---|---|
| STATE00 | 2 | 2000 State FIPS Code |
| COUNTY00 | 3 | 2000 County Code code |
| TRACT00 | 6 | 2000 Census Tract Code |
| GEOID00 | 11 | Concatenation of 2000 state, county and tract for Census 2000 Tract |
| POP00 | 14 | 2010 Population of the 2000 Tract |
| HU00 | 14 | 2010 Housing Unit Count of the 2000 Tract |
| PART00 | 1 | 2000 Tract Part Flag |
| AREA00 | 14 | Total Area of the 2000 Tract |
| AREALAND00 | 14 | Total Land Area of the 2000 Tract |
| STATE10 | 2 | 2010 State FIPS Code |
| COUNTY10 | 3 | 2010 County Code |
| TRACT10 | 6 | 2010 Tract Code |
| GEOID10 | 11 | Concatenation of state, county and tract for 2010 Census Tracts |
| POP10 | 14 | 2010 Population of the 2010 Tract |
| HU10 | 14 | 2010 Housing Unit Count of the 2010 Tract |
| PART10 | 1 | 2010 Tract Part Flag |
| AREA10 | 14 | Total Area of the 2010 Tract |
| AREALAND10 | 14 | Total Land Area of the 2010 Tract |
| AREAPT | 14 | Area for the record |
| AREALANDPT | 14 | Land Area for the record |
| AREAPCT00PT | 5 | Calculated Percent of the Total 2000 Tract the Area represents (to 2 decimal points) |
| AREALANDPCT00PT | 5 | Calculated Percent of the Total 2000 Tract the Land Area represents (to 2 decimal points) |
| AREAPCT10PT | 5 | Calculated Percent of the Total 2010 Tract the Area represents (to 2 decimal points) |
| AREALANDPCT10PT | 5 | Calculated Percent of the Total 2010 Tract the Land Area represents (to 2 decimal points) |
| POP10PT | 14 | Calculated 2010 Population for the relationship record |
| POPPCT00 | 5 | Calculated Percentage of the POP00 this record (POP10PT) contains (to 2 decimal points) |
| POPPCT10 | 5 | Calculated Percentage of the POP10 this record (POP10PT) contains (to 2 decimal points) |
| HU10PT | 14 | Calculated 2010 Housing Unit count for the relationship record |
| HUPCT00 | 5 | Calculated Percentage of the HU00 this record (HU10PT) contains (to 2 decimal points) |
| HUPCT10 | 5 | Calculated Percentage of the HU10 this record (HU10PT) contains (to 2 decimal points) |
Substantially Changed 2000 Census Tracts File Layout
| Column Name | Maximum Length | Column Description |
|---|---|---|
| STATE00 | 2 | 2000 State FIPS Code |
| COUNTY00 | 3 | 2000 County Code |
| TRACT00 | 6 | 2000 Census Tract Code |
| GEOID00 | 11 | Concatenation of state, county, and tract for Census 2000 Tracts |
Substantially Changed 2010 Census Tracts File Layout
| Column Name | Maximum Length | Column Description |
|---|---|---|
| STATE10 | 2 | 2010 State FIPS Code |
| COUNTY10 | 3 | 2010 County Code |
| TRACT10 | 6 | 2010 Census Tract Code |
| GEOID10 | 11 | Concatenation of state, county, and tract for 2010 Census Tracts |
Page Last Revised - October 8, 2021
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