U.S. Department of Commerce, U.S. Census Bureau, Geography Division 2012 2012 vector digital data http://www2.census.gov/geo/tiger/TIGER2012/TBG/tl_2012_us_tbg.zip 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 block group 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. The 2010 Census tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration. For the 2010 Census, tribal block groups do not necessarily contain tabulation blocks always beginning with the same number and could contain seemingly duplicate block numbers. For the 2010 Census, tabulation block numbers are still assigned only using by standard block group, not the tribal block groups. To better identify tribal block groups, the letter code range A through K (except I, which could be confused with a number 1) is used uniquely within each tribal census tract. For the 2010 Census, tribal block groups and tribal census tracts were delineated through the Tribal Statistical Areas Praogram (TSAP). In order for others to use the information in the Census MAF/TIGER database in a geographic information system (GIS) or for other geographic applications, the Census Bureau releases to the public extracts of the database in the form of TIGER/Line Shapefiles. 201108 201206 Publication Date Complete No changes or updates will be made to this version of the TIGER/Line Shapefiles. Future releases of TIGER/Line Shapefiles will reflect updates made to the Census MAF/TIGER database. -179.231086 179.859681 71.441059 -14.601813 None Nation Polygon Tribal Block Group ISO 19115 Topic Categories Boundaries 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)) United States U.S. None 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. U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch mailing

4600 Silver Hill Road, Stop 7400

Washington DC 20233-7400 United States 301-763-1128 301-763-4710 geo.tiger@census.gov Accurate against Federal Information Processing Series (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy. 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 FIPS 55. 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. 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. U.S. Department of Commerce, U.S. Census Bureau, Geography Division Unpublished material online 201108 201206 Publication Date MAF/TIGER All line segments 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. MAF/TIGER 2012 Federal Information Processing Series (FIPS), ANSI, and feature names. Vector G-polygon 1383 0.000458 0.000458 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 TBG.shp Current Tribal Block Group National U.S. Census Bureau AIANNHCE Current American Indian/Alaska Native/ Native Hawaiian area census code U.S. Census Bureau 0001 to 4999 Legal federally recognized American Indian area code U.S. Census Bureau TTRACTCE Current tribal census tract code U.S. Census Bureau 000000 to 998999 Blank U.S. Census Bureau T00000 to T98999 Blank U.S. Census Bureau TBLKGPCE Current tribal block group letter U.S. Census Bureau J Blank U.S. Census Bureau K Blank U.S. Census Bureau A to H Blank U.S. Census Bureau GEOID Tribal block group identifier; a concatenation of Current American Indian/Alaska Native/Native Hawaiian area census code, tribal census tract code, and tribal block group letter U.S. Census Bureau Current American Indian/Alaska Native/Native Hawaiian Area census code found in AIANNHCE, Current tribal census tract code found in TTRACTCE, tribal block group letter found in TBLKGPCE NAMELSAD Current translated legal/statistical area description and the tribal block group letter U.S. Census Bureau IB Tribal Block Group U.S. Census Bureau MTFCC MAF/TIGER feature class code U.S. Census Bureau G2410 Tribal Block Group U.S. Census Bureau ALAND Current land area (square meters) U.S. Census Bureau 0 9,999,999,999,999 square meters AWATER Current water area (square meters) U.S. Census Bureau 0 9,999,999,999,999 square meters INTPTLAT Current latitude of the internal point U.S. Census Bureau -90.000000 90.000000 Decimal degrees INTPTLON Current longitude of the internal point U.S. Census Bureau -180.000000 180.000000 Decimal degrees U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch mailing

4600 Silver Hill Road, Stop 7400

Washington DC 20233-7400 United States 301-763-1128 301-763-4710 geo.tiger@census.gov No warranty, expressed or implied is made with regard to the accuracy of these data, and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau in specific as to the spatial or attribute accuracy of the data. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the U.S. government in the use of these files. The boundary information in the TIGER/Line Shapefiles is for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes do not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions. TGRSHP (compressed) PK-ZIP, version 1.93 A or higher http://www2.census.gov/geo/tiger/TIGER2012/TBG/tl_2012_us_tbg.zip The online copy of the TIGER/Line files may be accessed without charge. To obtain more information about ordering TIGER/Line shapefiles visit http://www.census.gov/geo/www/tiger The TIGER/Line shapefiles contain geographic data only and do not include display mapping software or statistical data. For information on how to use the TIGER/Line shapefile data with specific software package users shall contact the company that produced the software. 20120615 U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch mailing

4600 Silver Hill Road, Stop 7400

Washington DC 20233-7400 United States 301-763-1128 301-763-4710 geo.tiger@census.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998