ZIP code 64503: St. Joseph, MO
ZIP code 64503 is in St. Joseph (95% of residents), in Buchanan County, Missouri. It is in Missouri's 6th congressional district. Its state senate district is State Senate District 34; its state house districts are State House District 11 (79%), State House District 10 (17%) and State House District 13 (4.2%).
See it on the mapAll of Missouri
City and county
| City or town | Share of ZIP residents |
|---|---|
| St. Joseph | 95% |
| County | Share of ZIP residents |
|---|---|
| Buchanan County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Washington township | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 6th congressional district (MO-06) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | John Josendale | 95% | |
| U.S. Representative (MO-06) | Sam Graves (R) | 202-225-7041 | 100% |
| U.S. Senator | Eric Schmitt (R) | 202-224-5721 · contact form | statewide |
| U.S. Senator | Josh Hawley (R) | 202-224-6154 · contact form | statewide |
| State Senator (State Senate District 34) | Tony Luetkemeyer (R) | 100% | |
| State Representative (State House District 11) | Brenda Shields (R) | 79% | |
| State Representative (State House District 10) | Bill Falkner (R) | 17% | |
| State Representative (State House District 13) | Sean Pouche (R) | 4.2% |
From Wikidata (community-maintained); confirm on the city's website.
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0); Mayors: Wikidata (CC0).
Local government
- St. Joseph website: https://www.stjosephmo.gov/
- St. Joseph laws: search for the St. Joseph, Missouri code of ordinances
- Buchanan County website: http://www.co.buchanan.mo.us
- Buchanan County laws: search for the Buchanan County, Missouri code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 34 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 11 | 79% |
| State House District 10 | 17% |
| State House District 13 | 4.2% |
Voting precincts
8 voting precincts overlap ZIP 64503. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:64503")
ZIP 64503 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.