Dickinson County, IA ZIP codes
There are 7 ZIP codes in Dickinson County, IA, in 7 towns, from 51331 to 51364. The largest are 51360 (Spirit Lake), 51351 (Milford) and 51347 (Lake Park). 1 more crosses into it from a neighbouring county: 51334.
The county seat is Spirit Lake.
- ZIP codes
- 7
- Partly in it
- 1 more
- Towns
- 7
- County seat
- Spirit Lake
- County FIPS
19059- State
- Iowa
- Population
- 17,990
- Median household income
- $75,432
- Land area
- 381 sq mi
- Area code
- 712
- Metro area
- Spirit Lake
Dickinson County ZIP codes by town
- Spirit Lake (county seat)
- 51360
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 Dickinson County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Dickinson County.
- 51334 Estherville · mostly in Emmet County
Map of Dickinson County ZIP codes
The ZIP codes of Dickinson 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.
Dickinson County in numbers
About 17,990 people live in Dickinson County, in 8,845 households, the 39th most populous of Iowa's 99 counties. The median household income is $75,432 a year, about the same as the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $270,700 (30% above the Iowa median), and median gross rent is $922 a month. The median age is 48.7; 31.2% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 17 minutes.
| Population | 17,990 |
|---|---|
| Households | 8,845 |
| Median age | 48.7 |
| Median household income | $75,432 |
| Median home value | $270,700 |
| Median gross rent | $922 |
| Bachelor's degree or higher | 31.2% |
| Mean commute | 16.7 min |
| Population density | 47 / 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 Dickinson County
| Town | ZIP codes | Population |
|---|---|---|
| Spirit Lake | 1 | 5,518 |
| Milford | 1 | 3,311 |
| Lake Park | 1 | 1,184 |
| Okoboji | 1 | 969 |
| Arnolds Park | 1 | 922 |
| Terril | 1 | 290 |
| Superior | 1 | 111 |
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 Dickinson County.
Not sure you are in Dickinson County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Dickinson County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
51331 | Arnolds Park , IA | Standard | 935 | $89,167 | $448,800 |
51347 | Lake Park , IA | Standard | 1,470 | $82,750 | $201,600 |
51351 | Milford , IA | Standard | 4,988 | $73,824 | $273,100 |
51355 | Okoboji , IA | Standard | 1,048 | $72,262 | $421,100 |
51360 | Spirit Lake , IA | Standard | 8,653 | $75,882 | $271,700 |
51363 | Superior , IA | Standard | 111 | $75,625 | $82,900 |
51364 | Terril , IA | Standard | 803 | $66,875 | $156,900 |
Cite this page
zipcodes.pro. “Dickinson County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/dickinson
Underlying data is public domain or openly licensed — sources, vintages and licences.