Boundary Atlas

ZIP code 59105: Billings, MT

ZIP code 59105 is in Billings (84% of residents), in Yellowstone County, Montana. 16% of its residents live outside city limits. It is in Montana's 2nd congressional district. Its state senate districts are State Senate District 22 (61%), State Senate District 20 (37%) and State Senate District 26 (2.1%); its state house districts are State House District 43 (32%), State House District 39 (32%), State House District 44 (29%), State House District 40 (4.4%) and State House District 52 (2.1%).

33,310residents (2020 Census)
95.9 sq miland area
1cities and towns
1congressional district
14voting precincts

See it on the mapAll of Montana

City and county

City or townShare of ZIP residents
Billings84%

CountyShare of ZIP residents
Yellowstone County100%

Town or county subdivisionShare of ZIP residents
Billings CCD80%
Northwest Yellowstone CCD15%
Shepherd CCD5.2%

Congressional district

Congressional districtShare of ZIP residents
Montana's 2nd congressional district (MT-02)100%

Elected officials

OfficeMemberContactShare of residents
MayorBill Cole406-294-570084%
U.S. Representative (MT-02)Troy Downing (R)202-225-3211100%
U.S. SenatorSteve Daines (R)202-224-2651 · contact formstatewide
U.S. SenatorTim Sheehy (R)202-224-2644statewide
State Senator (State Senate District 22)Daniel Zolnikov (R)61%
State Senator (State Senate District 20)Sue Vinton (R)37%
State Senator (State Senate District 26)Tom McGillvray (R)406-698-44282.1%
State Representative (State House District 43)Larry Brewster (R)406-670-092932%
State Representative (State House District 39)Kerri Seekins-Crowe (R)406-208-658732%
State Representative (State House District 44)Katie Zolnikov (R)29%
State Representative (State House District 40)Mike Vinton (R)406-855-33454.4%
State Representative (State House District 52)Stacy Zinn (R)2.1%

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2261%
State Senate District 2037%
State Senate District 262.1%

State house districtShare of ZIP residents
State House District 4332%
State House District 3932%
State House District 4429%
State House District 404.4%
State House District 522.1%

Voting precincts

14 voting precincts overlap ZIP 59105. 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:59105")

ZIP 59105 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.