Dataset Identification:
- 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). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. 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.
- Title TIGER/Line Shapefile, 2016, nation, U.S., Current Tribal Census Tract National
- alternateTitle National Geospatial Data Asset (NGDA) Tribal Census Tract
- publication Date 2016
Theme keywords ( theme ):
NGDA
Governmental Units and Administrative and Statistical Boundaries Theme
National Geospatial Data Asset
- Title NGDA Portfolio Themes
Theme keywords ( theme ):
Nation
Polygon
Tribal Census Tract
- Title None
Location keywords:
United States
U.S.
- Title ANSI INCITS 38:2009 (Formerly FIPS 5-2), ANSI INCITS 31:2009 (Formerly FIPS 6-4),ANSI INCITS 454:2009 (Formerly FIPS 8-6), ANSI INCITS 455:2009(Formerly FIPS 9-1), ANSI INCITS 446:2008 (Geographic Names Information System (GNIS))
purpose:
Browse image (thumbnail):
- maintenance or update frequency: notPlanned
- Legal Constraints
-
- Access Constraints otherRestrictions
- use constraint: otherRestrictions
- Other constraints
- Access Constraints: None
- Other constraints
- Use Constraints:The TIGER/Line Shapefile products are not copyrighted however TIGER/Line and Census TIGER are registered trademarks of the U.S. Census Bureau. These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The boundary information in the TIGER/Line Shapefiles are for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions. Coordinates in the TIGER/Line shapefiles have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest.
Resource extent
-
- westBoundLongitude -179.231086
- eastBoundLongitude 179.859681
- northBoundLatitude 71.441059
- southBoundLatitude -14.601813
Geographic Bounding Box - Temporal Extent
Geographic Extent
Publication Date
2014-06
2016-05
Vector spatial representation information
-
- Geometric Objects
-
- geometric Object Type complex
- geometric Object Count 482
Content information: feature catalog description
- Included With Dataset true
- Feature Types
Reference system information
- Reference System Identifier
- Identifier string:
- Identifier code space: Federal Information Processing Series (FIPS), Geographic Names Information System (GNIS), and feature names.
Data quality information
Scope of quality information
- Processing Step
-
- date and time 2016-01-01T00:00:00
- description TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database by nation, state, county, and entity. Census MAF/TIGER data for all of the aforementioned geographic entities are then distributed among the shapefiles each containing attributes for line, polygon, or landmark geographic data.
- source
-
- source description online
- source citation
-
- Title Census MAF/TIGER database
- alternateTitle MAF/TIGER
- Publication Date Date 201605
- other Citation Details Source Contribution: All line segments
- cited responsible party - originator
-
- organisation Name U.S. Department of Commerce, U.S. Census Bureau, Geography Division
- evaluation Method Description Data completeness of the TIGER/Line Shapefiles reflects the contents of the Census MAF/TIGER database at the time the TIGER/Line Shapefiles were created.
- measure Description The Census Bureau performed automated tests to ensure logical consistency and limits of shapefiles. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. All polygons are tested for closure. The Census Bureau uses its internally developed geographic update system to enhance and modify spatial and attribute data in the Census MAF/TIGER database. Standard geographic codes, such as FIPS codes for states, counties, municipalities, county subdivisions, places, American Indian/Alaska Native/Native Hawaiian areas, and congressional districts are used when encoding spatial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation of the original Census MAF/TIGER database files. Most of the codes for geographic entities except states, counties, urban areas, Core Based Statistical Areas (CBSAs), American Indian Areas (AIAs), and congressional districts were provided to the Census Bureau by the USGS, the agency responsible for maintaining the Geographic Names Information System (GNIS). Feature attribute information has been examined but has not been fully tested for consistency. For the TIGER/Line Shapefiles, the Point and Vector Object Count for the G-polygon SDTS Point and Vector Object Type reflects the number of records in the shapefile attribute table. For multi-polygon features, only one attribute record exists for each multi-polygon rather than one attribute record per individual G-polygon component of the multi-polygon feature. TIGER/Line Shapefile multi-polygons are an exception to the G-polygon object type classification. Therefore, when multi-polygons exist in a shapefile, the object count will be less than the actual number of G-polygons.
Resource distribution information
Distributor
- fees The online copy of the TIGER/Line Shapefiles may be accessed without charge.
- Ordering Instructions To obtain more information about ordering TIGER/Line Shapefiles visit //www.census.gov/geo/www/tiger
- Format name TGRSHP (compressed)
- Format version
- file Decompression Technique PK-ZIP, version 1.93 A or higher
- Format name HTML
- Format version
- Format name WMS
- Format version 1.3.0
- Format name REST
- Format version
- Linkage for online resource
-
- name Shapefile Zip File
- URL: //www2.census.gov/geo/tiger/TIGER2016/TTRACT/tl_2016_us_ttract.zip
- Linkage for online resource
-
- name TIGER/Line Shapefiles
- URL: //www.census.gov/geo/maps-data/data/tiger-line.html
- Description Should be used for most mapping projects--this is our most comprehensive dataset. Designed for use with GIS (geographic information systems).
- Linkage for online resource
-
- name TIGERweb/tigerWMS_Current (MapServer)
- URL: https://tigerweb.geo.census.gov/arcgis/services/TIGERweb/tigerWMS_Current/MapServer/WMSServer
- link function download
- Description This web mapping service contains the layer for Current Tribal Census Tracts. Since this layer displays at scales of 1:1,155,581 or greater, adjusting the BBox coordinates in the URL is necessary
- target application profile http://opengis.net/spec/wms
- Linkage for online resource
-
- name TIGERweb/TribalTracts (MapServer)
- URL: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/TribalTracts/MapServer
- link function download
- Description This Rest Service contains the Tribal Census Tracts Layers
- target application profile http://www.geoplatform.gov/spec/esri-map-rest
- maintenance or update frequency: notPlanned
- notes: This was transformed from the Census Metadata Import Format