Eureka, Montana
Eureka is a town in Lincoln County, Montana, with 1,380 residents in 2020. It is in Montana's 1st congressional district. Its state senate district is State Senate District 1; its state house district is State House District 1.
County
| County | Share of residents |
|---|---|
| Lincoln County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Montana's 1st congressional district (MT-01) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MT-01) | Ryan K. Zinke (R) | 202-225-5628 | 100% |
| U.S. Senator | Steve Daines (R) | 202-224-2651 · contact form | statewide |
| U.S. Senator | Tim Sheehy (R) | 202-224-2644 | statewide |
| State Senator (State Senate District 1) | Mike Cuffe (R) | 100% | |
| State Representative (State House District 1) | Neil Duram (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
- Eureka website: http://www.eureka-mt.gov
- Eureka laws: search for the Eureka, Montana code of ordinances
- Lincoln County website: http://www.lincolncountymt.us
- Lincoln County laws: search for the Lincoln County, Montana code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 1 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 1 | 100% |
ZIP codes
Percentages mark ZIPs only partly in Eureka: the share of that ZIP's residents living in it.
- 59917 (32%)
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:3024850")
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.