NCSL's Redistricting Webpages


redistricting map red push pins

Redistricting is the process of redrawing state legislative and congressional district boundaries. This process occurs every 10 years following the decennial U.S. Census, and is based on numerous criteria, including population and geographical boundaries.

The process of redistricting is governed by the U.S. Constitution, the federal Voting Rights Act of 1965, as well as states constitutional and statutory provisions.

This page serves as a table of contents for NCSL's  comprehensive information on redistricting data, law, technology and process. For more information, contact Wendy Underhill by email or at 303-364-7700.

General Redistricting

Redistricting Law

Redistricting Process


Redistricting Technology

Additional Resources