| ZIP Codes: | 15 ZIP Codes (12 Standard, 2 PO Box, 1 Unique) [See All] |
| Area Codes: | 605 / 701 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:54:21 PM |
| Population: | 168 [See All] |
| FIPS: | 46091 |
| Land Area: | 1,426 sq mi |
| Water Area: | 45 sq mi |
| Coordinates: | 45.9859, -97.5459 |
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16,388 residents live across 15 ZIPs covering 1,426 sq mi, served by 13 distinct USPS-recognized cities.
Population moved from 16,100 to 16,325 from 2014 to 2024 — a +1.4% change. 6 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 58008 (Barney, $119,167 median) and poorest ZIP 58053 (Lidgerwood, $51,339) are 18.1 miles apart — a 2.3× income gap across local geography.
Median home values vary 4.1× across this county — from $96,100 in 58053 (Lidgerwood) to $392,900 in 58015 (Christine).
Density varies 9354× across the county — from 3 people/sq mi in 58057 (Mcleod) to 25,118 in 58076 (Wahpeton).
Educational attainment ranges from 17.6% bachelor's+ in 58041 (Hankinson) to 47.3% in 58018 (Colfax) — the breadth of educational profiles across the area.
Within North Dakota, this is the #64 most populous of 64 counties and ranks #1 for median household income with the #8 fastest decade growth .
On the national stage, Richland County is ranks #50 for income .
Hosts 1 single-entity Unique ZIP: 58076Nd State College Of Science .
Weighted by population, the typical household earns about $74,492 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.6% of adults age 25+ hold a bachelor's degree or higher (2,505 of 10,621 reporting).
12 Standard delivery, 2 PO Box only, 1 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 58075 | Wahpeton | Standard | 9,046 | $68,537 | 246.2 | 0.0% |
| 58053 | Lidgerwood | Standard | 1,409 | $51,339 | 225.2 | -0.1% |
| 58041 | Hankinson | Standard | 1,389 | $85,368 | 207.8 | -11.9% |
| 58081 | Wyndmere | Standard | 876 | $87,632 | 163.4 | -8.6% |
| 58077 | Walcott | Standard | 684 | $108,750 | 130.2 | 8.2% |
| 58030 | Fairmount | Standard | 593 | $75,909 | 125.2 | -2.5% |
| 58018 | Colfax | Standard | 428 | $105,000 | 76.6 | 51.8% |
| 58076 | Wahpeton | Unique | 427 | — | 0.0 | 24.1% |
| 58061 | Mooreton | Standard | 369 | $93,125 | 60.7 | -5.4% |
| 58015 | Christine | Standard | 343 | $103,438 | 23.7 | 32.9% |
| 58001 | Abercrombie | PO Box | 232 | $64,844 | 0.6 | 197.4% |
| 58057 | Mcleod | Standard | 226 | $70,156 | 84.2 | 83.7% |
| 58008 | Barney | Standard | 188 | $119,167 | 58.6 | -28.8% |
| 58058 | Mantador | Standard | 115 | $79,375 | 23.8 | -8.7% |
| 58074 | Wahpeton | PO Box | 63 | — | 0.0 | — |