Boundary Atlas

ZIP code 39429: Columbia, MS

ZIP code 39429 is in Columbia (42% of residents), in Marion County (99%), Lamar County (1.2%) and Jefferson Davis County (0.2%), Mississippi. 58% of its residents live outside city limits. It is in Mississippi's 3rd congressional district (99%) and Mississippi's 4th congressional district (1.2%). Its state senate districts are State Senate District 41 (100%) and State Senate District 35 (0.2%); its state house districts are State House District 100 (93%), State House District 99 (5.8%), State House District 87 (0.7%) and State House District 91 (0.2%).

16,073residents (2020 Census)
298.7 sq miland area
1cities and towns
2congressional districts
17voting precincts

See it on the mapAll of Mississippi

City and county

City or townShare of ZIP residents
Columbia42%

CountyShare of ZIP residents
Marion County99%
Lamar County1.2%
Jefferson Davis County0.2%

Town or county subdivisionShare of ZIP residents
District 230%
District 529%
District 127%
District 47.3%
District 34.7%
District 40.7%
District 30.5%
District 20.2%

Congressional districts

Congressional districtShare of ZIP residents
Mississippi's 3rd congressional district (MS-03)99%
Mississippi's 4th congressional district (MS-04)1.2%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

State legislative districts

State senate districtShare of ZIP residents
State Senate District 41100%
State Senate District 350.2%

State house districtShare of ZIP residents
State House District 10093%
State House District 995.8%
State House District 870.7%
State House District 910.2%

Voting precincts

17 voting precincts overlap ZIP 39429. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:39429")

ZIP 39429 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.