Boundary Atlas

Louisiana: cities, counties, ZIP codes and districts

Louisiana has 6 congressional districts, 39 state senate districts and 105 state house districts under the maps in force for November 3, 2026, plus 3,574 voting precincts, 64 counties, 484 cities, towns and Census-designated places, and 539 ZIP codes.

Cities and towns

Largest first. Each page lists the city's county, districts and ZIP codes.

Congressional districts (2026)

DistrictShort2020 population
Louisiana's 1st congressional districtLA-01776,249
Louisiana's 2nd congressional districtLA-02776,248
Louisiana's 3rd congressional districtLA-03776,355
Louisiana's 4th congressional districtLA-04776,337
Louisiana's 5th congressional districtLA-05776,285
Louisiana's 6th congressional districtLA-06776,283

ZIP codes in Louisiana

Each page lists the ZIP's congressional and legislative districts, with population shares where it's split.

Get this in your AI agent

Your agent can list, look up and map every district and precinct in Louisiana. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

list_geographies(country="US", level="congressional_district", region="LA")