Boundary Atlas

ZIP code 58643: Marmarth, ND

ZIP code 58643 is in Marmarth (72% of residents), in Slope County (84%) and Bowman County (16%), North Dakota. 28% of its residents live outside city limits. It is in North Dakota's at-large congressional district. Its state senate district is State Senate District 39; its state house district is State House District 39.

140residents (2020 Census)
141.2 sq miland area
1cities and towns
1congressional district
2voting precincts

See it on the mapAll of North Dakota

City and county

City or townShare of ZIP residents
Marmarth72%

CountyShare of ZIP residents
Slope County84%
Bowman County16%

Town or county subdivisionShare of ZIP residents
Marmarth city72%
West Bowman UT11%
Sunny Slope township5.0%
West Slope UT5.0%
Bucklin township3.6%
Hughes township3.6%

Congressional district

Congressional districtShare of ZIP residents
North Dakota's at-large congressional district (ND-AL)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 39100%

State house districtShare of ZIP residents
State House District 39100%

Voting precincts

2 voting precincts overlap ZIP 58643. 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:58643")

ZIP 58643 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.