ZIP code 63367: Lake St. Louis, MO
ZIP code 63367 is in Lake St. Louis (62% of residents) and O'Fallon (26%), in St. Charles County, Missouri. 12% of its residents live outside city limits. It is in Missouri's 2nd congressional district (62%) and Missouri's 3rd congressional district (38%). Its state senate districts are State Senate District 2 (99%) and State Senate District 10 (0.8%); its state house districts are State House District 108 (93%), State House District 102 (5.9%) and State House District 63 (0.8%).
See it on the mapAll of Missouri
City and county
| City or town | Share of ZIP residents |
|---|---|
| Lake St. Louis | 62% |
| O'Fallon | 26% |
| Wentzville | 0.8% |
| County | Share of ZIP residents |
|---|---|
| St. Charles County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Lake St. Louis township | 51% |
| Boone township | 49% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Missouri's 2nd congressional district (MO-02) | 62% |
| Missouri's 3rd congressional district (MO-03) | 38% |
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-02) | Ann Wagner (R) | 202-225-1621 | 62% |
| U.S. Representative (MO-03) | Robert F. Onder, Jr. (R) | 202-225-2956 | 38% |
| 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 2) | Nick Schroer (R) | 99% | |
| State Representative (State House District 108) | Mike Costlow (R) | 93% | |
| State Representative (State House District 102) | Richard West (R) | 5.9% | |
| State Representative (State House District 63) | Tricia Byrnes (R) | 0.8% |
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
- Lake St. Louis website: http://www.lakesaintlouis.com/
- Lake St. Louis laws: search for the Lake St. Louis, Missouri code of ordinances
- O'Fallon website: http://www.ofallon.mo.us/
- O'Fallon laws: search for the O'Fallon, Missouri code of ordinances
- St. Charles County website: http://www.sccmo.org
- St. Charles County laws: search for the St. Charles County, Missouri code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 2 | 99% |
| State Senate District 10 | 0.8% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 108 | 93% |
| State House District 102 | 5.9% |
| State House District 63 | 0.8% |
Voting precincts
11 voting precincts overlap ZIP 63367. 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:63367")
ZIP 63367 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.