Traill County, ND ZIP codes
There are 9 ZIP codes in Traill County, ND, in 9 towns, from 58009 to 58257. The largest are 58045 (Hillsboro), 58257 (Mayville) and 58218 (Buxton). 2 more cross into it from a neighbouring county: 58240 and 58274.
The county seat is Hillsboro.
- ZIP codes
- 9
- Partly in it
- 2 more
- Towns
- 9
- County seat
- Hillsboro
- County FIPS
38097- State
- North Dakota
- Population
- 7,970
- Median household income
- $87,004
- Land area
- 862 sq mi
Traill 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 Traill County
These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Traill County.
- 58240 Hatton · mostly in Steele County
- 58274 Portland · mostly in Steele County
Map of Traill County ZIP codes
The ZIP codes of Traill 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.
Traill County in numbers
About 7,970 people live in Traill County, in 3,333 households, the 18th most populous of North Dakota's 53 counties. The median household income is $87,004 a year, 13% above the North Dakota median of $76,657 (US: $80,734). The median owner-occupied home is valued at $200,700 (20% below the North Dakota median), and median gross rent is $717 a month. The median age is 40.4; 30.9% of adults 25 and over hold a bachelor's degree or higher (32.7% across North Dakota); the average commute takes 20 minutes.
| Population | 7,970 |
|---|---|
| Households | 3,333 |
| Median age | 40.4 |
| Median household income | $87,004 |
| Median home value | $200,700 |
| Median gross rent | $717 |
| Bachelor's degree or higher | 30.9% |
| Mean commute | 19.9 min |
| Population density | 9 / 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 Traill County
| Town | ZIP codes | Population |
|---|---|---|
| Mayville | 1 | 1,976 |
| Hillsboro | 1 | 1,704 |
| Buxton | 1 | 360 |
| Cummings | 1 | 172 |
| Grandin | 1 | 119 |
| Caledonia | 1 | 74 |
| Clifford | 1 | 54 |
| Blanchard | 1 | 48 |
| Galesburg | 1 | 44 |
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 Traill County.
Not sure you are in Traill County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Traill County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
58009 | Blanchard , ND | Standard | 48 | — | — |
58016 | Clifford , ND | Standard | 178 | $109,359 | $136,900 |
58035 | Galesburg , ND | Standard | 212 | $131,471 | $288,600 |
58038 | Grandin , ND | Standard | 179 | $112,750 | $210,000 |
58045 | Hillsboro , ND | Standard | 2,239 | $86,484 | $211,800 |
58218 | Buxton , ND | Standard | 873 | $91,964 | $268,000 |
58219 | Caledonia , ND | Standard | 175 | $81,724 | $191,700 |
58223 | Cummings , ND | Standard | 172 | $96,750 | $342,300 |
58257 | Mayville , ND | Standard | 2,180 | $60,395 | $196,200 |
Cite this page
zipcodes.pro. “Traill County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/nd/county/traill
Underlying data is public domain or openly licensed — sources, vintages and licences.