Lake St. Louis, Missouri
Lake St. Louis is a city in St. Charles County, Missouri, with 16,730 residents in 2020. It spans 2 congressional districts: MO-03 (60%) and MO-02 (40%). Its state senate district is State Senate District 2; its state house district is State House District 108.
County
| County | Share of residents |
|---|---|
| St. Charles County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Missouri's 3rd congressional district (MO-03) | 60% |
| Missouri's 2nd congressional district (MO-02) | 40% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MO-03) | Robert F. Onder, Jr. (R) | 202-225-2956 | 60% |
| U.S. Representative (MO-02) | Ann Wagner (R) | 202-225-1621 | 40% |
| 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) | 100% | |
| State Representative (State House District 108) | Mike Costlow (R) | 100% |
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
- 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 residents |
|---|---|
| State Senate District 2 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 108 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Lake St. Louis: the share of that ZIP's residents living in it.
- 63367 (62%)
Get this in your AI agent
Your agent can get Lake St. Louis's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:2940043")
Lake St. Louis here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.