Cavalier County, ND ZIP codes
There are 10 ZIP codes in Cavalier County, ND, in 10 towns, from 58239 to 58355. The largest are 58249 (Langdon), 58352 (Munich) and 58239 (Hannah). 1 more crosses into it from a neighbouring county: 58282.
The county seat is Langdon.
- ZIP codes
- 10
- Partly in it
- 1 more
- Towns
- 10
- County seat
- Langdon
- County FIPS
38019- State
- North Dakota
- Population
- 3,633
- Median household income
- $69,531
- Land area
- 1,489 sq mi
Cavalier County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Cavalier County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Cavalier County.
- 58282 Walhalla · mostly in Pembina County
Map of Cavalier County ZIP codes
The ZIP codes of Cavalier County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Cavalier County in numbers
About 3,633 people live in Cavalier County, in 1,560 households, the 31st most populous of North Dakota's 53 counties. The median household income is $69,531 a year, 9% below the North Dakota median of $76,657 (US: $80,734). The median owner-occupied home is valued at $125,800 (50% below the North Dakota median), and median gross rent is $786 a month. The median age is 48.3; 22.1% of adults 25 and over hold a bachelor's degree or higher (32.7% across North Dakota); the average commute takes 19 minutes.
| Population | 3,633 |
|---|---|
| Households | 1,560 |
| Median age | 48.3 |
| Median household income | $69,531 |
| Median home value | $125,800 |
| Median gross rent | $786 |
| Bachelor's degree or higher | 22.1% |
| Mean commute | 18.8 min |
| Population density | 2 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Cavalier County
| Town | ZIP codes | Population |
|---|---|---|
| Langdon | 1 | 1,782 |
| Munich | 1 | 257 |
| Osnabrock | 1 | 115 |
| Milton | 1 | 43 |
| Alsen | 1 | 39 |
| Nekoma | 1 | 22 |
| Calvin | 1 | 5 |
| Hannah | 1 | 4 |
| Wales | 1 | 2 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Cavalier County.
Not sure you are in Cavalier County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Cavalier County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
58239 | Hannah , ND | Standard | 58 | $146,125 | — |
58249 | Langdon , ND | Standard | 2,217 | $64,571 | $148,500 |
58255 | Maida , ND | Standard | 0 | — | — |
58260 | Milton , ND | Standard | 256 | $57,813 | $86,900 |
58269 | Osnabrock , ND | Standard | 139 | — | $34,800 |
58281 | Wales , ND | Standard | 57 | $128,750 | $79,700 |
58311 | Alsen , ND | Standard | 60 | $82,386 | $96,700 |
58323 | Calvin , ND | Standard | 72 | $250,000+ | — |
58352 | Munich , ND | Standard | 436 | $94,000 | $120,500 |
58355 | Nekoma , ND | Standard | 22 | $104,375 | $112,500 |
Cite this page
zipcodes.pro. “Cavalier County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/nd/county/cavalier
Underlying data is public domain or openly licensed — sources, vintages and licences.