ZIP code 65203: Columbia, MO
ZIP code 65203 is in Columbia (87% of residents), in Boone County, Missouri. 13% of its residents live outside city limits. It is in Missouri's 3rd congressional district (84%) and Missouri's 4th congressional district (16%). Its state senate district is State Senate District 19; its state house districts are State House District 47 (40%), State House District 50 (38%), State House District 45 (17%), State House District 44 (4.6%) and State House District 46 (<0.1%).
See it on the mapAll of Missouri
City and county
| City or town | Share of ZIP residents |
|---|---|
| Columbia | 87% |
| County | Share of ZIP residents |
|---|---|
| Boone County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Missouri township | 80% |
| Rock Bridge township | 18% |
| Katy township | 1.3% |
| Three Creeks township | 0.2% |
| Columbia township | <0.1% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 3rd congressional district (MO-03) | 84% |
| Missouri's 4th congressional district (MO-04) | 16% |
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 |
|---|---|---|---|
| Mayor | Barbara Buffaloe | 87% | |
| U.S. Representative (MO-03) | Robert F. Onder, Jr. (R) | 202-225-2956 | 84% |
| U.S. Representative (MO-04) | Mark Alford (R) | 202-225-2876 | 16% |
| 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) | 100% | |
| State Representative (State House District 47) | Adrian Plank (Democratic) | 40% | |
| State Representative (State House District 50) | Gregg Bush (Democratic) | 38% | |
| State Representative (State House District 45) | Kathy Steinhoff (Democratic) | 17% | |
| State Representative (State House District 44) | John Martin (R) | 4.6% | |
| State Representative (State House District 46) | David Smith (Democratic) | <0.1% |
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
- Columbia website: https://www.como.gov/
- Columbia laws: search for the Columbia, Missouri code of ordinances
- Boone County website: https://www.boonemo.gov/
- Boone County laws: search for the Boone County, Missouri code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 19 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 47 | 40% |
| State House District 50 | 38% |
| State House District 45 | 17% |
| State House District 44 | 4.6% |
| State House District 46 | <0.1% |
Voting precincts
43 voting precincts overlap ZIP 65203. 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:65203")
ZIP 65203 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.