ZIP code 58568: Porcupine, ND
ZIP code 58568 is in Porcupine (33% of residents) and Selfridge (21%), in Sioux County (99%) and Corson County (0.8%), North Dakota. 46% of its residents live outside city limits. It is in North Dakota's at-large congressional district (99%) and South Dakota's at-large congressional district (0.8%). Its state senate districts are State Senate District 31 (99%) and State Senate District 28 (0.8%); its state house districts are State House District 31 (99%) and State House District 28A (0.8%).
See it on the mapAll of North Dakota
City and county
| City or town | Share of ZIP residents |
|---|---|
| Porcupine | 33% |
| Selfridge | 21% |
| County | Share of ZIP residents |
|---|---|
| Sioux County | 99% |
| Corson County | 0.8% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| North Sioux UT | 38% |
| Southwest Sioux UT | 31% |
| Selfridge city | 21% |
| Fort Yates UT | 9.0% |
| East Corson UT | 0.8% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| North Dakota's at-large congressional district (ND-AL) | 99% |
| South Dakota's at-large congressional district (SD-AL) | 0.8% |
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 (ND-AL) | Julie Fedorchak (R) | 202-225-2611 | 99% |
| U.S. Representative (SD-AL) | Dusty Johnson (R) | 202-225-2801 | 0.8% |
| U.S. Senator | John Hoeven (R) | 202-224-2551 · contact form | statewide |
| U.S. Senator | Kevin Cramer (R) | 202-224-2043 · contact form | statewide |
| State Senator (State Senate District 31) | Don Schaible (R) | 99% | |
| State Senator (State Senate District 28) | Sam Marty (R) | 0.8% | |
| State Representative (State House District 31) | Dawson Holle (R) | 99% | |
| State Representative (State House District 31) | Karen Rohr (R) | 99% | |
| State Representative (State House District 28A) | Jana Hunt (R) | 0.8% |
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
- Porcupine laws: search for the Porcupine, North Dakota code of ordinances
- Selfridge website: http://www.selfridge-nd.com/
- Selfridge laws: search for the Selfridge, North Dakota code of ordinances
- Sioux County laws: search for the Sioux County, North Dakota code of ordinances
- Corson County website: http://corson.sdcounties.org
- Corson County laws: search for the Corson County, North Dakota code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 31 | 99% |
| State Senate District 28 | 0.8% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 31 | 99% |
| State House District 28A | 0.8% |
Voting precincts
3 voting precincts overlap ZIP 58568. It also crosses into SD. 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:58568")
ZIP 58568 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.