ZIP code 59721: Jefferson County, MT
ZIP code 59721 is in Cardwell (14% of residents), in Jefferson County (54%) and Madison County (46%), Montana. 86% of its residents live outside city limits. It is in Montana's 2nd congressional district (54%) and Montana's 1st congressional district (46%). Its state senate districts are State Senate District 35 (88%) and State Senate District 38 (12%); its state house districts are State House District 69 (88%) and State House District 75 (12%).
See it on the mapAll of Montana
City and county
| City or town | Share of ZIP residents |
|---|---|
| Cardwell | 14% |
| Mammoth | 0.9% |
| County | Share of ZIP residents |
|---|---|
| Jefferson County | 54% |
| Madison County | 46% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Whitehall CCD | 54% |
| Harrison CCD | 46% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Montana's 2nd congressional district (MT-02) | 54% |
| Montana's 1st congressional district (MT-01) | 46% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MT-02) | Troy Downing (R) | 202-225-3211 | 54% |
| U.S. Representative (MT-01) | Ryan K. Zinke (R) | 202-225-5628 | 46% |
| 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 35) | Tony Tezak (R) | 88% | |
| State Senator (State Senate District 38) | Becky Beard (R) | 12% | |
| State Representative (State House District 69) | Ken Walsh (R) | 88% | |
| State Representative (State House District 75) | Mark Reinschmidt (R) | 12% |
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
- Cardwell laws: search for the Cardwell, Montana code of ordinances
- Jefferson County laws: search for the Jefferson 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 35 | 88% |
| State Senate District 38 | 12% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 69 | 88% |
| State House District 75 | 12% |
Voting precincts
4 voting precincts overlap ZIP 59721. 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:59721")
ZIP 59721 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.