TIGER/Line Shapefile, 2018, nation, U.S., Current Tribal Census Tract National

This page last updated: 01/15/2021
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1. Overview
2. Data Quality
3. Data Organization
4. Coordinate System
5. Attributes
6. Distribution - Get Data
7. Metadata Reference

Section 1 Overview
Originator U.S. Census Bureau
Title TIGER/Line Shapefile, 2018, nation, U.S., Current Tribal Census Tract National
Abstract A tribal census tract is a relatively permanent statistical subdivision of a federally recognized American Indian reservation and/or off-reservation trust land, delineated by the American Indian tribal government and/or the Census Bureau for the purpose of presenting demographic data. For the 2010 Census, tribal census tracts are defined independently of the standard county-based census tract delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 2,400, a single tribal census tract is defined. Qualifying areas with a population greater than 2,400 could define additional tribal census tracts within their area. The tribal census tract codes for the 2010 Census are six characters long with a leading "T" alphabetic character followed by a five-digit numeric code, for example, T01000, which translates as tribal census tract 10. Tribal block groups nest within tribal census tracts. Since individual tabulation blocks are defined within the standard State-county-census tract geographic hierarchy, a tribal census tract can contain seemingly duplicate block numbers, thus tribal census tracts cannot be used to uniquely identify census tabulation blocks for the 2010 Census.

The boundaries of tribal census tracts are those delineated through the Tribal Statistical Areas Program (TSAP) for the 2010 Census.

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB).
Purpose The Current Tribal Census Tract National shapefile contains attributes for a tribal block group. This is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land.
Time Period of Content Date 2018
Currentness Reference
Maintenance and Update Frequency
Spatial Extent of Data
Bounding Coordinates -97.139141
Place Keywords
Theme Keywords
Theme Keyword Thesaurus
Access Constraints
Use Constraints
Contact Person Information ,

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Associated Data Sets

Section 2 Data Quality
Attribute Accuracy
Logical Consistency
Horizontal Positional Accuracy

Section 3 Spatial Data Organization (not used in this metadata)

Section 4 Coordinate System
Horizontal Coordinate Scheme Universal Transverse Mercator
UTM Zone Number 15
Horizontal Datum NAD83
Horizontal Units meters

Section 5 Attributes
Detailed Citation
Table Detail:
Field NameValid ValuesDefinitionDefinition Source
Internal feature number.Esri
Feature geometry.Esri
Current American Indian/Alaska Native/ Native Hawaiian area census code. Legal federally recognized American Indian area code.
Current tribal census tract code
Tribal census tract identifier; a concatenation of American Indian Area/Alaska Native/Native Hawaiian area census code and tribal census tract
Current tribal census tract name, consisting of the first four characters of the tribal census tract code
Current name and the translated legal/statistical area description for the tribal census tract
MAF/TIGER feature class code
Current land area (square meters)
Current water area (square meters)
Current latitude of the internal point
Current longitude of the internal point

Section 6 Distribution
Publication Date 06/01/2017
Contact Person Information ,

Distributor's Data Set Identifier
Distribution Liability
Ordering Instructions
Online Linkage I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.

Section 7 Metadata Reference
Metadata Date 01/15/2021
Contact Person Information ,

Metadata Standard Name
Metadata Standard Version
Metadata Standard Online Linkage

This page last updated: 01/15/2021
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