ZIP code 59055: Sweet Grass County, MT
ZIP code 59055 is in Sweet Grass County, Montana, outside any city or Census-designated place. It is in Montana's 2nd congressional district. Its state senate districts are State Senate District 28 (60%) and State Senate District 39 (40%); its state house districts are State House District 56 (60%) and State House District 78 (40%).
See it on the mapAll of Montana
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Sweet Grass County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| North of the Yellowstone CCD | 100% |
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 28) | Forrest Mandeville (R) | 60% | |
| State Senator (State Senate District 39) | Wylie Galt (R) | 40% | |
| State Representative (State House District 56) | Fiona Nave (R) | 406-321-4602 | 60% |
| State Representative (State House District 78) | Randyn Gregg (R) | 40% |
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
- Sweet Grass County laws: search for the Sweet Grass County, Montana code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 28 | 60% |
| State Senate District 39 | 40% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 56 | 60% |
| State House District 78 | 40% |
Voting precincts
2 voting precincts overlap ZIP 59055. 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:59055")
ZIP 59055 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.