2020 Census Highlights
Highlights of the 2020 Census
- 24th decennial census
- US population: 331,449,281
- The resident population increased by 22,703,743 or 7.4% from 308,745,538 in 2010.
- Illinois population: 12,822,739
- Illinois will have 17 Representatives in the U.S. House of Representatives, which is 1 less than allocated by the 2010 Census.
- Redistricting in the states will occur 2021-22; Elections using the new Congressional district boundaries will be held Fall 2022; The 118th Congress members will be sworn in January 2023 (2023-24).
- Conducted during the COVID-19 Pandemic
Census 2020: Data Releases
- 2020 Redistricting Data, Easier-to-Use FormatReleased Sept 16, 2021.
The data in this release is identical to the August 12, 2021 release, but is integrated into the Census Bureau data portal at data.census.gov making it easier-to-use. Guidance for 2020 Redistricting Data Users is provided. - 2020 Census Redistricting DataReleased August 12, 2021
Summary Files provided for download from FTP site. Links to technical documentation and geographic products are linked with answers to common questions provided at the bottom of the page. The same data in easier-to-use formats will be made available by September 30, 2021 at data.census.gov. - 2020 Apportionment ResultsReleased April 26, 2021
Descriptive data overview in the press release provided in English and in Spanish. - A Preliminary Analysis of U.S. and State-Level Results From the 2020 CensusThis report addresses the quality of the 2020 Census from two methods: (1) analyses that compare the first census results to other ways of measuring the population, and (2) metrics that provide insight into the census operations.
- Congressional ApportionmentAnswers to many questions about Apportionment such as what it is, its legal basis, how it is calculated, and historical data on how it has changed 1910-2020.
- Social Explorer This link opens in a new windowsubscription database, access to NU-affiliated users only.
Includes Census data 1790-present along with other datasets on health, crime, and other topics. US emphasis but other national data is also available. Data can be mapped or data tables extracted.
- National Historic GIS (NHGIS)Hosted at the University of Minnesota, provides aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2020. Open access to data, although users must create an account.
2020 Census Maps & Graphics
Apportionment of the U.S. House of Representatives based on the 2020 Census -- Map available in PDF and PNG format.
Historical maps of apportionment are also provided using an interactive web map.
2020 Census Map: 2020 Resident Population for the 50 States, the District of Columbia, and Puerto Rico
2020 Census Map: Percent Change in Resident Population for the 50 States, the District of Columbia, and Puerto Rico: 2010 to 2020
Data Privacy Using Differential Privacy
The Census Bureau is legally mandated to protect the privacy of respondents to the Decennial Census (and other data surveys). For the 2020 Census the Bureau will employ a new statistical method called differential privacy designed to withstand modern re-identification threats possible with ubiquitous access to high powered computing. 2020 Census Data Products: Disclosure Avoidance Modernization provides publications, videos, demonstration data, blogs, newsletters (sign up to keep informed!), and an FAQ to explain the impact of differential privacy on data products.
For more info...
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Encyclopedia of the U.S. CensusThe history, politics, content, procedures, and uses of the decennial census of the American population. See the entry under "History of Decennial Censuses". Includes bibliography for each census through 2010.
