Boundary Atlas

ZIP code 58257: Mayville, ND

ZIP code 58257 is in Mayville (85% of residents), in Traill County, North Dakota. 15% 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 20; its state house district is State House District 20.

2,174residents (2020 Census)
124.4 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of North Dakota

City and county

City or townShare of ZIP residents
Mayville85%

CountyShare of ZIP residents
Traill County100%

Town or county subdivisionShare of ZIP residents
Mayville city85%
Mayville township5.1%
Lindaas township4.7%
Morgan township1.7%
Norway township1.2%
Viking township1.1%
Blanchard township0.9%
Roseville township<0.1%
Wold township<0.1%
Norman townshipland only

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (ND-AL)Julie Fedorchak (R)202-225-2611100%
U.S. SenatorJohn Hoeven (R)202-224-2551 · contact formstatewide
U.S. SenatorKevin Cramer (R)202-224-2043 · contact formstatewide
State Senator (State Senate District 20)Randy Lemm (R)100%
State Representative (State House District 20)Dave Rustebakke (R)100%
State Representative (State House District 20)Mike Beltz (R)100%

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 20100%

State house districtShare of ZIP residents
State House District 20100%

Voting precincts

6 voting precincts overlap ZIP 58257. 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:58257")

ZIP 58257 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.