Foster County, ND ZIP Codes
6 ZIP codes cover all or part of Foster County, North Dakota: 58421, 58455, 58464, 58443, 58445 and 58484. The Census Bureau counts 3,358 residents in the county, with a median household income of $87,831 and a median home value of $167,500. Its largest communities include Carrington, Glenfield and Grace City.
Foster County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 3,358 |
| Households | 1,531 |
| Median household income | $87,831 |
| Median home value | $167,500 |
| Median age | 43.4 |
| Median rent | $780 |
All 6 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 3,965 |
| Households (sum of ZIP codes) | 1,765 |
| Median household income, range across ZIP codes | $89,097 (58421) to $89,097 (58421) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $89,097 |
| Homeowners | 81.6% |
| Households with kids under 18 | 26.1% |
| Moved in the past year | 8.9% |
| Carrier routes in EDDM2GO's route library | 2 routes, 115 homes (2 of 6 ZIP codes) |
Every ZIP code in Foster County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 58421 | Carrington | 2,969 | 1,353 | $89,097 | $171,200 | 78.6% | 27.9% | 9.9% | — | — | 83% of its land |
| 58455 | Kensal | 336 | 110 | $76,500 | $158,800 | 90.9% | 23.6% | 3.9% | — | — | 41% of its land |
| 58464 | McHenry | 270 | 123 | $55,938 | $110,900 | 100.0% | 13.8% | 12.2% | 1 | 77 | 36% of its land |
| 58443 | Glenfield | 152 | 78 | $73,500 | $120,800 | 88.5% | 10.3% | 5.3% | — | — | 100% of its land |
| 58445 | Grace City | 145 | 57 | $72,250 | $109,400 | 98.2% | 33.3% | 0.0% | — | — | 65% of its land |
| 58484 | Sutton | 93 | 44 | $170,500 | $129,200 | 65.9% | 31.8% | 5.4% | 1 | 40 | 27% of its land |
A ZIP code is listed for Foster County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Carrington — 2,168 residents · 1 ZIP code
- Glenfield — 63 residents · 1 ZIP code
- Grace City — 61 residents · 1 ZIP code
Price a mailing to Foster County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Foster County, ND?
- 58421, 58455, 58464, 58443, 58445 and 58484. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Foster County?
- 3,358 residents in 1,531 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Foster County?
- $87,831 for the county as a whole. Its ZIP codes range from $89,097 (58421) to $89,097 (58421).
- How many carrier routes and mailboxes are in Foster County?
- For the 2 of 6 ZIP codes in EDDM2GO's stored route library: 2 carrier routes reaching 115 residential and 2 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.