ZIP code 70577: Port Barre, LA
ZIP code 70577 is in Port Barre (40% of residents), in St. Landry Parish, Louisiana. 60% of its residents live outside city limits. It is in Louisiana's 5th congressional district (53%) and Louisiana's 3rd congressional district (47%). Its state senate district is State Senate District 17; its state house districts are State House District 40 (55%) and State House District 46 (45%).
See it on the mapAll of Louisiana
City and county
| City or town | Share of ZIP residents |
|---|---|
| Port Barre | 40% |
| County | Share of ZIP residents |
|---|---|
| St. Landry Parish | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| District 6 | 85% |
| District 5 | 13% |
| District 7 | 1.6% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Louisiana's 5th congressional district (LA-05) | 53% |
| Louisiana's 3rd congressional district (LA-03) | 47% |
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 district | Share of ZIP residents |
|---|---|
| State Senate District 17 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 40 | 55% |
| State House District 46 | 45% |
Voting precincts
10 voting precincts overlap ZIP 70577. 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:70577")
ZIP 70577 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.