The
United States Census Bureau website also has a lot of useful information, including detailed FAQs on specific aspects of census activity.
The
National Conference of State Legislatures also has 2020 Census resources, including information on why the census is important, hard-to-count populations, complete count committees, legislative efforts, specific examples of outreach strategies, and further details on how census information is used.
The
Wisconsin Department of Public Instruction has collected some interesting Wisconsin-specific numbers regarding the census's impact and projections for the state.

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