State redistricting timelines following the 2010 census
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redistricting procedures |
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Redistricting is the process of drawing new congressional and state legislative district boundaries. Following the 2010 census, each of the states drew and enacted new district maps for the nation's 435 congressional districts and 7,382 state legislative seats across 99 chambers.
This article details redistricting deadlines in the states in the 2010 cycle. For more information on the overall redistricting process following the 2010 census, click here. For information regarding the redistricting process following the 2020 census, click here.
This article includes the following information:
- Redistricting timelines after the 2010 census: Background information on initial enactment dates for district maps enacted during the 2010 redistricting cycle.
- Types of redistricting: A brief overview of the main processes used during redistricting.
- Congressional apportionment outcomes: An examination of states that gained or lost congressional seats following the 2010 census.
Redistricting timelines after the 2010 census
In the 2010 redistricting cycle, redistricting authorities enacted 43 new congressional district maps and 50 new state legislative district maps. The majority of these – 63 maps (31 congressional and 32 state legislative), 67.74 percent of the total– were enacted in 2011. In 2012, 28 maps (12 congressional and 16 state legislative) were enacted, 30.11 percent of the total. The remaining maps were enacted in the first six months of 2013.
The table and bar charts below list initial congressional and state legislative district map enactment dates for all 50 states in the 2010 cycle. These graphics do not take into account maps that were subsequently redrawn.
The charts below show congressional and state legislative district map enactment dates for all 50 states in the 2010 cycle. These graphics do not take into account maps that were subsequently redrawn.
| Redistricting in the United States |
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Types of redistricting
- See also: State-by-state redistricting procedures
In each state, there are three general processes by which districts are re-drawn.
- Legislative authority
- Commission
- Hybrid of both legislative and commission
Congressional apportionment outcomes
The breakdown of states that won and lost new seats in the Congressional reapportionment are as follows:[1]
| States that Added Congressional Seats after 2010 Census | ||
|---|---|---|
| State | Before 2010 census | After 2010 census[2] |
| Arizona | 8 | 9 (+1) |
| Florida | 25 | 27 (+2) |
| Georgia | 13 | 14 (+1) |
| Nevada | 3 | 4 (+1) |
| South Carolina | 6 | 7 (+1) |
| Texas | 32 | 36 (+4) |
| Utah | 3 | 4 (+1) |
| Washington | 9 | 10 (+1) |
| States that Lost Congressional Seats after 2010 Census | ||
|---|---|---|
| State | Before 2010 census | After 2010 census[3] |
| Illinois | 19 | 18 (-1) |
| Iowa | 5 | 4 (-1) |
| Louisiana | 7 | 6 (-1) |
| Massachusetts | 10 | 9 (-1) |
| Michigan | 15 | 14 (-1) |
| Missouri | 9 | 8 (-1) |
| New Jersey | 13 | 12 (-1) |
| New York | 29 | 27 (-2) |
| Ohio | 18 | 16 (-2) |
| Pennsylvania | 19 | 18 (-1) |
See also
- State Legislative and Congressional Redistricting after the 2010 Census
- State redistricting deadlines after the 2020 census
- State-by-state redistricting procedures
External links
- All About Redistricting
- National Conference of State Legislatures, "Redistricting Process"
- FairVote, "Redistricting"
Footnotes
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