ZIP code 59101: Billings, MT
ZIP code 59101 is in Billings (68% of residents) and Lockwood (17%), in Yellowstone County (100%) and Big Horn County (<0.1%), Montana. 14% of its residents live outside city limits. It is in Montana's 2nd congressional district. Its state senate districts are State Senate District 24 (48%), State Senate District 20 (20%), State Senate District 23 (14%), State Senate District 21 (11%), State Senate District 27 (6.0%) and State Senate District 18 (0.2%); its state house districts are State House District 47 (26%), State House District 48 (22%), State House District 40 (20%), State House District 42 (11%), State House District 45 (10%), State House District 46 (4.4%), State House District 54 (4.0%), State House District 53 (2.0%) and State House District 35 (0.2%).
See it on the mapAll of Montana
City and county
| City or town | Share of ZIP residents |
|---|---|
| Billings | 68% |
| Lockwood | 17% |
| County | Share of ZIP residents |
|---|---|
| Yellowstone County | 100% |
| Big Horn County | <0.1% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Billings CCD | 78% |
| South Yellowstone CCD | 18% |
| Laurel CCD | 3.8% |
| Crow Reservation CCD | <0.1% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Montana's 2nd congressional district (MT-02) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Bill Cole | 406-294-5700 | 68% |
| 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 |
Plus 15 state legislators across 15 districts. Look up an address for the exact ones.
Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Billings website: https://www.billingsmt.gov/
- Billings laws: search for the Billings, Montana code of ordinances
- Lockwood laws: search for the Lockwood, Montana code of ordinances
- Yellowstone County laws: search for the Yellowstone County, Montana code of ordinances
- Big Horn County laws: search for the Big Horn County, Montana code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 24 | 48% |
| State Senate District 20 | 20% |
| State Senate District 23 | 14% |
| State Senate District 21 | 11% |
| State Senate District 27 | 6.0% |
| State Senate District 18 | 0.2% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 47 | 26% |
| State House District 48 | 22% |
| State House District 40 | 20% |
| State House District 42 | 11% |
| State House District 45 | 10% |
| State House District 46 | 4.4% |
| State House District 54 | 4.0% |
| State House District 53 | 2.0% |
| State House District 35 | 0.2% |
Voting precincts
20 voting precincts overlap ZIP 59101. 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:59101")
ZIP 59101 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.