Foster County, North Dakota ZIP codes
3 ZIP codes are in Foster County, plus 5 that cross in from neighboring counties.
- ZIP codes
- 3
- Population in these ZIPs
- 3,266
- Avg. median income
- $87,600population-weighted
- Cities & towns
- 3
Loading map…
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Foster County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 58421 | Carrington | 2,969 | $89,097 | $204,500 |
| 58443 | Glenfield | 152 | $73,500 | $120,800 |
| 58445 | Grace City | 145 | $72,250 | $109,400 |
ZIP codes partly in Foster County
These ZIP codes are mostly in a neighboring county but cover part of Foster County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 58356 | New Rockford | Eddy County | 1,627 | $51,042 | $118,800 |
| 58426 | Courtenay | Stutsman County | 170 | $91,071 | — |
| 58455 | Kensal | Stutsman County | 336 | $76,500 | $158,800 |
| 58464 | Mchenry | Eddy County | 270 | $55,938 | $110,900 |
| 58484 | Sutton | Griggs County | 93 | $170,500 | $129,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Foster County
Nearby counties
Frequently asked questions
How many ZIP codes are in Foster County, North Dakota?
3 ZIP codes are mainly in Foster County, and 5 more ZIP codes from neighboring areas reach partly into it.
What cities are in Foster County?
ZIP codes in Foster County use the city names Carrington, Glenfield and Grace City.