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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>*USE </SPAN><SPAN STYLE="font-weight:bold;">geoid </SPAN><SPAN>TO JOIN DATA DOWNLOADED FROM DATA.CENSUS.GOV*</SPAN></P><P><SPAN>The </SPAN><A href="https://www.census.gov:443/geographies/mapping-files/time-series/geo/tiger-line-file.html" STYLE="text-decoration:underline;"><SPAN>TIGER/Line Shapefiles</SPAN></A><SPAN> are extracts of selected geographic and cartographic information from the Census Bureau's Master Address File (MAF)/Topologically Integrated Geographic Encoding and Referencing (TIGER) System (MTS).</SPAN></P><P><SPAN>The TIGER/Line Shapefiles contain a standard geographic identifier (GEOID) for each entity that links to the GEOID in the data from censuses and surveys. The TIGER/Line Shapefiles do not include demographic data from surveys and censuses (e.g., Decennial Census, Economic Census, American Community Survey, and the Population Estimates Program). Other, non-census, data often have this standard geographic identifier as well. Data from many of the Census Bureau’s surveys and censuses, including the geographic codes needed to join to the TIGER/Line Shapefiles, are available at the Census Bureau’s public data dissemination website (https://data.census.gov/).</SPAN></P><P><SPAN>Block Groups (BGs) are statistical divisions of census tracts, are generally defined to contain between 600 and 3,000 people, and are used to present data and control block numbering. A block group consists of clusters of blocks within the same census tract that have the same first digit of their four-digit census block number. For example, blocks 3001, 3002, 3003, . . . , 3999 in census tract 1210.02 belong to BG 3 in that census tract. Most BGs were delineated by local participants in the Census Bureau’s Participant Statistical Areas Program (PSAP). The Census Bureau delineated BGs only where a local or tribal government declined to participate in PSAP, and a regional organization or the State Data Center was not available to participate. A BG usually covers a contiguous area. Each census tract contains at least one BG, and BGs are uniquely numbered within the census tract. Within the standard census geographic hierarchy, BGs never cross state, county, or census tract boundaries, but may cross the boundaries of any other geographic entity. Tribal census tracts and tribal BGs are separate and unique geographic areas defined within federally recognized American Indian reservations and can cross state and county boundaries (see “Tribal Census Tract” and “Tribal Block Group”). The tribal census tracts and tribal block groups may be completely different from the standard county-based census tracts and block groups defined for the same area.</SPAN></P><P><SPAN>Downloaded from </SPAN><A href="https://www2.census.gov:443/geo/tiger/TIGER2022/BG/" STYLE="text-decoration:underline;"><SPAN>https://www2.census.gov/geo/tiger/TIGER2022/BG/</SPAN></A><SPAN> on June 22, 2023</SPAN></P></DIV></DIV></DIV> |