TIGER/Line Shapefile, 2021, State, Oklahoma, 2020 Census Blocks
type: Dataset
description: 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. Census Blocks are statistical areas bounded on all sides by visible features, such as streets, roads, streams, and railroad tracks, and/or by nonvisible boundaries such as city, town, township, and county limits, and short line-of-sight extensions of streets and roads. Census blocks are relatively small in area; for example, a block in a city bounded by streets. However, census blocks in remote areas are often large and irregular and may even be many square miles in area. A common misunderstanding is that data users think census blocks are used geographically to build all other census geographic areas, rather all other census geographic areas are updated and then used as the primary constraints, along with roads and water features, to delineate the tabulation blocks. As a result, all 2020 Census blocks nest within every other 2020 Census geographic area, so that Census Bureau statistical data can be tabulated at the block level and aggregated up to the appropriate geographic areas. Census blocks cover all territory in the United States, Puerto Rico, and the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands). Blocks are the smallest geographic areas for which the Census Bureau publishes data from the decennial census. A block may consist of one or more faces.
issued: 2025-09-24T03:53:50.119898
modified: 2025-09-24T03:53:50.119907
spatial: Location
keyword: 40
keyword: AmeriGEO
keyword: AmeriGEOSS
keyword: CKAN
keyword: GEO
keyword: GEOSS
keyword: National
keyword: North America
keyword: United States
keyword: block
keyword: census block
keyword: ok
keyword: oklahoma
keyword: polygon
keyword: state or equivalent entity
keyword: u.s.
keyword: united states

TIGERweb/Tracts_Blocks (MapServer)
type: Distribution
description: The GeoServices REST Specification provides a way for Web clients to communicate with geographic information system (GIS) servers through Representational State Transfer (REST) technology.
format: Esri REST
issued: 2022-11-01T19:52:33.994068
modified: 2025-09-24T03:53:50.096643
access URL: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Tracts_Blocks/MapServer

TIGERweb/tigerWMS_Current (MapServer)
type: Distribution
description: The Open Geospatial Consortium, Inc. (OGC) Web Map Service interface standard (WMS) provides a simple HTTP interface for requesting geo-registered map images from our geospatial database. The response to the request is one or more geo-registered map images that can be displayed in a browser or WMS client application. By gaining access to our data through our WMS, users can produce maps containing TIGERweb layers combined with layers from other servers.
format: Esri REST
issued: 2022-11-01T19:52:33.994064
modified: 2025-09-24T03:53:50.095498
access URL: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/tigerWMS_ACS2021/MapServer

tl_2021_40_tabblock20.zip
type: Distribution
description: The TIGER/Line Shapefiles are the fully supported, core geographic product from the U.S. Census Bureau. They are extracts 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.
format: ZIP
issued: 2022-11-01T19:52:33.994054
modified: 2025-09-24T03:53:50.093113
access URL: https://www2.census.gov/geo/tiger/TIGER2021/TABBLOCK20/tl_2021_40_tabblock20.zip

tl_2021_tabblock20.shp.ea.iso.xml
type: Distribution
description: Entity and attribute file
format: XML
issued: 2022-11-01T19:52:33.994060
modified: 2025-09-24T03:53:50.094341
access URL: https://meta.geo.census.gov/data/existing/decennial/GEO/GPMB/TIGERline/Archived_19110/tl_2021_tabblock20.shp.ea.iso.xml

US Migrating
type: Agent