ZIP code 59057: Yellowstone County, MT
ZIP code 59057 is in Yellowstone County (80%) and Stillwater County (20%), Montana, outside any city or Census-designated place. It is in Montana's 2nd congressional district. Its state senate districts are State Senate District 19 (80%) and State Senate District 28 (20%); its state house districts are State House District 38 (80%) and State House District 56 (20%).
See it on the mapAll of Montana
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Yellowstone County | 80% |
| Stillwater County | 20% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Northwest Yellowstone CCD | 80% |
| North Stillwater CCD | 17% |
| Park City CCD | 3.1% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Montana's 2nd congressional district (MT-02) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MT-02) | Troy Downing (R) | 202-225-3211 | 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 19) | Barry Usher (R) | 406-252-2888 | 80% |
| State Senator (State Senate District 28) | Forrest Mandeville (R) | 20% | |
| State Representative (State House District 38) | Greg Oblander (R) | 406-652-3553 | 80% |
| State Representative (State House District 56) | Fiona Nave (R) | 406-321-4602 | 20% |
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
- Yellowstone County laws: search for the Yellowstone County, Montana code of ordinances
- Stillwater County website: http://www.stillwater.mt.gov
- Stillwater County laws: search for the Stillwater County, Montana code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 19 | 80% |
| State Senate District 28 | 20% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 38 | 80% |
| State House District 56 | 20% |
Voting precincts
5 voting precincts overlap ZIP 59057. 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:59057")
ZIP 59057 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.