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A block group usually covers a contiguous area. Each census tract contains at least one block group and
block groups are uniquely numbered within census tract. Within the standard census geographic
hierarchy, block groups never cross county or census tract boundaries, but may cross the boundaries of
county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian,
Alaska Native, and Native Hawaiian areas.
TIGER Technical Documentation can be download here:
TIGER/LineĀ® Shapefiles 2019 Technical Documentation
Geographic Data:
2020 Census Block Groups (2020 Version)
Census Data joined to geographic data:
Income Data
B19013
MEDIAN HOUSEHOLD INCOME IN THE PAST 12 MONTHS (IN 2020 INFLATION-ADJUSTED DOLLARS)
2016-2020 American Community Survey 5-Year Estimates
Sex by Age
B01001
SEX BY AGE
2016-2020 American Community Survey 5-Year Estimates
Race
B02001
RACE
2016-2020 American Community Survey 5-Year Estimates