ZIP code 39478: District 4, MS
ZIP code 39478 is in Marion County (55%) and Walthall County (45%), Mississippi, outside any city or Census-designated place. It is in Mississippi's 3rd congressional district. Its state senate district is State Senate District 41; its state house district is State House District 99.
See it on the mapAll of Mississippi
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Marion County | 55% |
| Walthall County | 45% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 4 | 55% |
| District 3 | 41% |
| District 2 | 4.5% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Mississippi's 3rd congressional district (MS-03) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 41 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 99 | 100% |
Voting precincts
5 voting precincts overlap ZIP 39478. 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:39478")
ZIP 39478 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.