ZIP code 63454: Round Grove, MO
ZIP code 63454 is in Marion County (66%) and Lewis County (34%), Missouri, outside any city or Census-designated place. It is in Missouri's 6th congressional district. Its state senate district is State Senate District 18; its state house districts are State House District 5 (66%) and State House District 4 (34%).
See it on the mapAll of Missouri
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Marion County | 66% |
| Lewis County | 34% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Round Grove township | 51% |
| Union township | 17% |
| Highland township | 16% |
| Fabius township | 16% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 6th congressional district (MO-06) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| 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 18) | Cindy O'Laughlin (R) | 100% | |
| State Representative (State House District 5) | Louis Riggs (R) | 66% | |
| State Representative (State House District 4) | Greg Sharpe (R) | 34% |
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
- Marion County website: https://marioncountymo.com/
- Marion County laws: search for the Marion County, Missouri code of ordinances
- Lewis County laws: search for the Lewis County, Missouri code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 18 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 5 | 66% |
| State House District 4 | 34% |
Voting precincts
4 voting precincts overlap ZIP 63454. 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:63454")
ZIP 63454 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.