Slope County ZIP Codes
North Dakota, United States · 2 codes
Slope County in North Dakota has 2 ZIP codes, from 58620 to 58643, serving 2 places.
ZIP codes in Slope
Frequently asked questions
What is the ZIP code of Slope?
Slope has 2 ZIP codes, from 58620 to 58643. The table lists the places each one serves.
How many places are listed in Slope County?
2 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.