Eureka, Missouri
Eureka is a city in St. Louis County (99% of residents) and Jefferson County (0.6%), Missouri, with 11,712 residents in 2020. It spans 2 congressional districts: MO-02 (99%) and MO-03 (0.6%). It spans 2 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| St. Louis County | 99% |
| Jefferson County | 0.6% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Missouri's 2nd congressional district (MO-02) | 99% |
| Missouri's 3rd congressional district (MO-03) | 0.6% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MO-02) | Ann Wagner (R) | 202-225-1621 | 99% |
| U.S. Representative (MO-03) | Robert F. Onder, Jr. (R) | 202-225-2956 | 0.6% |
| 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 26) | Ben Brown (R) | 99% | |
| State Senator (State Senate District 22) | Mary Elizabeth Coleman (R) | 0.6% | |
| State Representative (State House District 88) | Holly Jones (R) | 99% | |
| State Representative (State House District 111) | Cecelie Williams (R) | 0.6% |
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
- Eureka website: https://www.eureka.mo.us/
- Eureka laws: search for the Eureka, Missouri code of ordinances
- St. Louis County laws: search for the St. Louis County, Missouri code of ordinances
- Jefferson County website: http://www.jeffcomo.org
- Jefferson County laws: search for the Jefferson County, Missouri code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 26 | 99% |
| State Senate District 22 | 0.6% |
| State house district | Share of residents |
|---|---|
| State House District 88 | 99% |
| State House District 111 | 0.6% |
ZIP codes
Percentages mark ZIPs only partly in Eureka: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Eureka'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:2922834")
Eureka 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.