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US Census Boundaries – Block Groups


US Census Bureau
Decennially
9/25/2019
Yes
No
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This data layer indicates the boundaries for the US Census Block Groups. It was developed by the US Census Bureau. Block Groups are the second smallest units in the Census. They are composed of Census Blocks. The US Census Bureau uses these boundaries to summarize data from its Decennial Census and from the annual American Community surveys. This information is used to shape public policy.

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