ZIP code 59730: Big Sky, MT

ZIP code 59730 is in Big Sky (31% of residents) and Gallatin Gateway (28%), in Gallatin County (100%) and Madison County (<0.1%), Montana. 41% of its residents live outside city limits. It is in Montana's 1st congressional district. Its state senate district is State Senate District 30; its state house district is State House District 60.

2,154residents (2020 Census)

686.1 sq miland area

2cities and towns

1congressional district

4voting precincts

See it on the map All of Montana

City and county

City or town	Share of ZIP residents
Big Sky	31%
Gallatin Gateway	28%

County	Share of ZIP residents
Gallatin County	100%
Madison County	land only

Town or county subdivision	Share of ZIP residents
Gallatin Gateway CCD	53%
Big Sky CCD	46%
West Yellowstone CCD	1.1%
Bozeman CCD	0.2%
Yellowstone National Park CCD	land only
Madison Valley CCD	land only

Congressional district

Congressional district	Share of ZIP 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 30)	Cora Neumann (Democratic)		100%
State Senator (State Senate District 35)	Tony Tezak (R)		<0.1%
State Representative (State House District 60)	Alanah Griffith (Democratic)		100%
State Representative (State House District 69)	Ken Walsh (R)		<0.1%

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

Big Sky website: http://visitbigskymt.com/
Big Sky laws: search for the Big Sky, Montana code of ordinances
Gallatin Gateway laws: search for the Gallatin Gateway, Montana code of ordinances
Gallatin County laws: search for the Gallatin County, Montana code of ordinances
Madison County website: http://www.madison.mt.gov
Madison County laws: search for the Madison County, Montana code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 30	100%
State Senate District 35	land only

State house district	Share of ZIP residents
State House District 60	100%
State House District 69	land only

Voting precincts

4 voting precincts overlap ZIP 59730. Map them, with each precinct's share of the ZIP's residents.

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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:

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ZIP 59730 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.