Feature Catalog for the 2020 TIGER/Line Shapefile 2021 Census Block state based Shapefile Census Block 2021 20210523 eng UTF-8 U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Spatial Data Collection and Products Branch 301-763-1128 301-763-4710 4600 Silver Hill Road, Stop 7400 Washington DC 20233-7400 United States geo.geography@census.gov custodian BG.shp Current Block Group State-based false STATEFP Current state Federal Information Processing Series (FIPS) code National Standard Codes (ANSI INCITS 38-2009), Federal Information Processing Series (FIPS) - States/State Equivalents COUNTYFP Current county Federal Information Processing Series (FIPS) code National Standard Codes (ANSI INCITS 31-2009), Federal Information Processing Series (FIPS) - Counties/County Equivalents TRACTCE Current census tract code 000100 to 998999 Census tract number 990000 to 990099 Water tract (2010 and continuing) 990100 to 998999 Census tract number BLKGRPCE Current block group number. A block group number of 0 represents a water block group. 0 9 GEOID Census block group identifier; a concatenation of the current state Federal Information Processing Series (FIPS) code, county FIPS code, census tract code, and block group number The GEOID attribute is a concatenation of the state FIPS code, followed by the county FIPS code, followed by the census tract code, followed by the block group number. No spaces are allowed between the two codes. The State FIPS code is taken from "National Standard Codes (ANSI INCITS 38-2009), Federal Information Processing Series (FIPS) - States". The county FIPS code is taken from "National Standard Codes (ANSI INCITS 31-2009), Federal Information Processing Series (FIPS) - Counties/County Equivalents". The census tract code is taken from the "TRACTCE" attribute. The block group number is taken from the "BLKGRPCE" attribute. NAMELSAD Current translated legal/statistical area description and the block group number Refer to the block group number that appears in BLKGRPCE and translated legal/statistical area description code BG, Block Group MTFCC MAF/TIGER feature class code G5030 Block Group FUNCSTAT Current functional status S Statistical entity ALAND Current land area (square meters) 0 9999999 AWATER Current water area (square meters) 0 9999999 INTPTLAT Current latitude of the internal point -90 90 INTPTLON Current longitude of the internal point -180 180