Series Information File for the 2017 TIGER/Line Shapefile, Current Block Group State-based

Metadata Updated: January 15, 2021

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.

Block Groups (BGs) are clusters of blocks within the same census tract. Each census tract contains at least one BG, and BGs are uniquely numbered within census tracts. BGs have a valid code range of 0 through 9. BGs have the same first digit of their 4-digit census block number from the same decennial census. For example, tabulation blocks numbered 5001, 5002, 5005,.., 5999 within census tract 1210.02 are also within BG 5 within that census tract. BGs coded 0 are intended to only include water area, no land area, and they are generally in territorial seas, coastal water, and Great Lakes water areas. Block groups generally contain between 600 and 5,000 people. A BG usually covers a contiguous area but never crosses county or census tract boundaries. They may, however, cross the boundaries of other geographic entities like county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian / Alaska Native / Native Hawaiian areas.

The BG boundaries in this release are those that were delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2010 Census.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Collection

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Dates

Metadata Date July 30, 2019
Metadata Created Date January 15, 2021
Metadata Updated Date January 15, 2021
Reference Date(s) 2017 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from 2017_bg

Graphic Preview

URL for the TigerWeb Web Mapping Service

Additional Metadata

Resource Type Series
Metadata Date July 30, 2019
Metadata Created Date January 15, 2021
Metadata Updated Date January 15, 2021
Reference Date(s) 2017 (publication)
Responsible Party Unknown
Contact Email
Guid SeriesCollection_tl_2017_bg.shp.iso.xml
Access Constraints Access Constraints: None, 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.
Bbox East Long 179.859681
Bbox North Lat 71.441059
Bbox South Lat -14.601813
Bbox West Long -179.231086
Collection Metadata true
Coupled Resource
Frequency Of Update notPlanned
Graphic Preview Description URL for the TigerWeb Web Mapping Service
Graphic Preview File https://tigerweb.geo.census.gov/arcgis/services/TIGERweb/tigerWMS_ACS2017/MapServer/WmsServer?REQUEST=GetMap&SERVICE=WMS&VERSION=1.3.0&LAYERS=Census Block Groups,Census Block Groups Labels&STYLES=default,default&FORMAT=image/svg+xml&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE&CRS=EPSG:4326&BBOX=42.389053,-71.907142,42.52679,-71.879999&WIDTH=891&HEIGHT=751
Graphic Preview Type URL for the TigerWeb Web Mapping Service
Licence
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-179.231086, -14.601813], [179.859681, -14.601813], [179.859681, 71.441059], [-179.231086, 71.441059], [-179.231086, -14.601813]]]}
Progress
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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