ZIP code 65640: Campbell, MO
ZIP code 65640 is in Polk County (90%) and Cedar County (10%), Missouri, outside any city or Census-designated place. It is in Missouri's 4th congressional district. Its state senate district is State Senate District 28; its state house districts are State House District 128 (90%), State House District 125 (6.2%) and State House District 127 (4.3%).
See it on the mapAll of Missouri
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Polk County | 90% |
| Cedar County | 10% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Campbell township | 61% |
| Cliquot township | 27% |
| Jefferson township | 6.2% |
| Madison township | 4.3% |
| West Madison township | 1.7% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 4th congressional district (MO-04) | 100% |
Members of Congress
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (MO-04) | Mark Alford (R) | 202-225-2876 |
| U.S. Senator | Eric Schmitt (R) | 202-224-5721 · contact form |
| U.S. Senator | Josh Hawley (R) | 202-224-6154 · contact form |
Members serving now (119th Congress, until January 3, 2027). Source: Members of Congress: the @unitedstates project, congress-legislators (CC0).
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 28 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 128 | 90% |
| State House District 125 | 6.2% |
| State House District 127 | 4.3% |
Voting precincts
6 voting precincts overlap ZIP 65640. 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:65640")
ZIP 65640 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.