2020 United States census
24th US national census
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| 2024 | Census data was used to determine the distribution of electoral votes for the United States presidential election. |
| 2024 | The Supreme Court is expected to make a decision in the Alexander v. South Carolina State Conference of the NAACP case regarding racial and partisan gerrymandering claims. |
| 2024 | Montana has its redistricting plan deadline in this year. |
| September 2024 | Planned release date for detailed demographic and housing data. |
| 2023 | Alexander v. South Carolina State Conference of the NAACP case was brought before the United States Supreme Court, representing the first partisan gerrymandering case since the Rucho v Common Cause decision, and the first racial gerrymandering case since Allen v Milligan. |
| 2023 | Louisiana and Mississippi have redistricting plan deadlines in this year. |
| December 21 2023 | A three-judge panel determined that the Michigan Independent Citizens Redistricting Commission drew district boundaries predominantly based on race, enjoining further use of the Michigan House and Senate maps. |
| October 2023 | Judge Steve C. Jones found that Georgia's redistricting maps illegally discriminated against Black voters, ordering the state to create an additional majority-Black district. |
| August 2023 | Planned release date for congressional district summary files. |
| July 1 2023 | United States Census Bureau estimated population data for Puerto Rican municipalities, revealing San Juan as potentially the 58th largest city in the United States if included in the national list. |
| June 8 2023 | The Supreme Court upheld the lower court's decision in Allen v. Milligan, ruling that Alabama illegally diluted the power of Black voters. |
| May 25 2023 | Demographic and housing data about local communities (DHC) is released. |
| 2022 | Filing deadlines for elections by which states with more than one congressional district must pass a new redistricting plan. |
| 2022 | The Ohio Supreme Court repeatedly struck down the state's congressional and legislative districts. |
| 2022 | U.S. House elections occurred after redistricting based on the 2020 census results. |
| November 8 2022 | House of Representatives elections were held in Pennsylvania, resulting in Democrats winning the majority of seats for the first time since 2008, despite losing the popular vote. |
| May 2022 | The newly drawn district boundaries were used in the primary elections. |
| May 2022 | Federal Judge Gary L. Sharpe delays New York's congressional and state senate primaries to August, rejecting arguments from state Democrats. |
| May 19 2022 | Additional census data revealed significant population undercounts in six states (Arkansas, Florida, Illinois, Mississippi, Tennessee, and Texas) and overcounts in eight states (Delaware, Hawaii, Massachusetts, Minnesota, New York, Ohio, Rhode Island, and Utah). |
| April 22 2022 | Florida redistricting maps passed into law, with pending litigation |
| April 21 2022 | A New York appeals court upholds the ruling that the state's congressional maps were drawn with illegal partisan intent, while reinstating state assembly and state senate districts. |
| March 2022 | The state supreme court rejected several legal challenges to the new district boundaries. |
| March 31 2022 | New York redistricting maps overturned |
| March 25 2022 | A circuit court judge in Maryland throws out the congressional districts, declaring them an 'extreme gerrymander' that disenfranchises multiple communities of interest. |
| March 23 2022 | A group of nineteen African-American Detroiters sued the Michigan Independent Citizens Redistricting Commission (MICRC) for allegedly violating the Equal Protection Clause and Voting Rights Act. |
| March 10 2022 | Census Bureau released estimates of population overcount and undercount by demographic characteristics, revealing significant disparities in population counting across different racial and ethnic groups. |
| February 2022 | The state supreme court took control of the redistricting process and selected a new map for Pennsylvania's congressional districts. |
| February 2022 | North Carolina Supreme Court strikes down state legislative and congressional maps for partisan gerrymandering, leading to the drafting of new maps. |
| February 23 2022 | North Carolina redistricting maps passed into law |
| February 10 2022 | Connecticut Supreme Court adopted a redistricting map drawn by special master Nathaniel Persily, who created a least-change map with minimal adjustments to ensure equal population in congressional districts. |
| February 7 2022 | The Supreme Court temporarily reinstated Alabama's congressional map and added Alabama's appeal to their 2022 case list. |
| February 5 2022 | Minnesota Legislature failed to pass congressional and state legislative district maps by the mandated deadline, prompting the Minnesota Supreme Court to appoint a five-member commission to draw new boundaries. |
| February 3 2022 | New York redistricting maps initially passed into law, later overturned on March 31, 2022 |
| January 2022 | Pennsylvania's legislature enacted new district maps, which were immediately vetoed by Governor Tom Wolf, initiating a redistricting process following the 2020 United States census. |
| January 24 2022 | A three-judge panel blocked Alabama's congressional maps, arguing that with significant African American population growth, there should be more opportunities for representation. |
| 2021 | States with Republican control (such as Alabama, Florida, Georgia, Texas) proceed with redistricting plans through their state legislatures, maintaining partisan control of the redistricting process. |
| 2021 | Virginia and New Jersey must pass new redistricting plans by this year, differing from most other states' 2022 deadline. |
| 2021 | Six states (Arizona, California, Colorado, Idaho, Michigan, Montana, Washington) use independent commissions to draw congressional districts, aiming to reduce partisan gerrymandering. |
| 2021 | Virginia introduces a hybrid commission with eight legislators and eight non-legislator citizens, evenly divided between Democrats and Republicans, to conduct redistricting. |
| December 30 2021 | Georgia redistricting maps passed into law, with pending litigation |
| December 28 2021 | Michigan and Virginia redistricting maps passed into law |
| December 22 2021 | Arizona redistricting maps passed into law |
| December 9 2021 | Maryland state legislature overrides Governor Larry Hogan's veto of new congressional maps, which were criticized as 'disgracefully gerrymandered'. |
| November 23 2021 | Illinois U.S. House redistricting maps passed into law |
| November 20 2021 | Ohio U.S. House redistricting maps passed into law, later overturned by state Supreme Court |
| October 25 2021 | Texas redistricting maps passed into law, with pending litigation |
| October 4 2021 | Indiana redistricting maps passed into law |
| September 24 2021 | Illinois state legislative redistricting maps passed into law |
| September 16 2021 | Ohio legislative redistricting maps passed into law, later overturned by state Supreme Court |
| August 12 2021 | Census Bureau released the first set of detailed 2020 Census redistricting data, providing states with the population information needed to begin redrawing district boundaries. |
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This contents of the box above is based on material from the Wikipedia articles 2022 United States House of Representatives elections in Pennsylvania, 2020 United States census, List of United States cities by population & 2020 United States redistricting cycle, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.