ZIP code 65240: Centralia, MO
ZIP code 65240 is in Centralia (55% of residents), in Boone County (82%), Audrain County (17%), Callaway County (0.7%) and Monroe County (<0.1%), Missouri. 45% of its residents live outside city limits. It is in Missouri's 4th congressional district (82%), Missouri's 6th congressional district (17%) and Missouri's 3rd congressional district (0.7%). Its state senate districts are State Senate District 19 (82%), State Senate District 18 (17%) and State Senate District 10 (0.7%); its state house districts are State House District 44 (77%), State House District 43 (18%) and State House District 47 (4.9%).
See it on the mapAll of Missouri
City and county
| City or town | Share of ZIP residents |
|---|---|
| Centralia | 55% |
| County | Share of ZIP residents |
|---|---|
| Boone County | 82% |
| Audrain County | 17% |
| Callaway County | 0.7% |
| Monroe County | <0.1% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Centralia township | 66% |
| Rocky Fork township | 13% |
| Wilson township | 11% |
| Saling township | 6.1% |
| Bourbon township | 3.5% |
| Cleveland township | 0.7% |
| Jackson township | <0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 4th congressional district (MO-04) | 82% |
| Missouri's 6th congressional district (MO-06) | 17% |
| Missouri's 3rd congressional district (MO-03) | 0.7% |
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.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MO-04) | Mark Alford (R) | 202-225-2876 | 82% |
| U.S. Representative (MO-06) | Sam Graves (R) | 202-225-7041 | 17% |
| U.S. Representative (MO-03) | Robert F. Onder, Jr. (R) | 202-225-2956 | 0.7% |
| 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 19) | Stephen Webber (Democratic) | 82% | |
| State Senator (State Senate District 18) | Cindy O'Laughlin (R) | 17% | |
| State Representative (State House District 44) | John Martin (R) | 77% | |
| State Representative (State House District 43) | Kent Haden (R) | 18% | |
| State Representative (State House District 47) | Adrian Plank (Democratic) | 4.9% |
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).
Local government
- Centralia website: http://www.centraliamo.org
- Centralia laws: search for the Centralia, Missouri code of ordinances
- Boone County website: https://www.boonemo.gov/
- Boone County laws: search for the Boone County, Missouri code of ordinances
- Audrain County website: http://www.audraincounty.org
- Audrain County laws: search for the Audrain County, Missouri code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 19 | 82% |
| State Senate District 18 | 17% |
| State Senate District 10 | 0.7% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 44 | 77% |
| State House District 43 | 18% |
| State House District 47 | 4.9% |
Voting precincts
13 voting precincts overlap ZIP 65240. 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:65240")
ZIP 65240 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.