Redistricting in the United States typically occurs at the beginning of each decade following the release of new U.S. Census results.
October 21, 2025
high
procedural
Baseline timing for when legislative and congressional district maps are normally redrawn.
Allocations of certain federal emergency management and homeland security grants to states are determined using U.S. census population data.
October 19, 2025
high
procedural
Population counts from the U.S. Census are a basis for distributing some federal preparedness and security grant funds to states.
U.S. states typically conduct redistricting at the start of each decade following the release of new U.S. Census results.
October 09, 2025
high
temporal
Standard timing and trigger for state redistricting cycles in the United States.
A 2025 U.S. Census estimate placed Detroit's population at 645,705, an increase of 12,487 since a May 2024 estimate; the figure included nearly 6,800 new residents in 2024 and nearly 5,700 residents the census had undercounted in 2021â2023.
January 01, 2025
high
temporal
Population estimates and components as reported by the U.S. Census and city sources.
State legislatures redraw congressional district boundaries after each decennial U.S. Census to adjust for population changes.
high
procedural
Describes the routine redistricting process that follows the decennial census.
Congressional district maps in the United States are typically redrawn every 10 years following the decennial U.S. Census to reflect population shifts.
high
temporal
Describes the routine redistricting cycle tied to the decennial census.