Oceana County, Michigan
County seat: Hart · Population 27,177 (2025) · 538 sq mi
Oceana County is the 51st most populous of Michigan's 83 counties, with 27,177 people (2025 estimate). Its county seat is Hart. It is part of the West (Region 4) region, one of the 10 Michigan prosperity regions. The map shows its 7 cities and towns and the 6 neighboring counties.
Oceana County facts
- County seat
- Hart
- Population (2025 estimate)
- 27,177 +1.9% since 2020
- Land area
- 538 sq mi 64th largest of 83
- Water area
- 768 sq mi
- Population density
- 51 per sq mi
- Established
- 1831
- Named after
- The Commonwealth of Oceana, Lake Michigan
- Largest city
- Shelby 4,143
- Median household income
- $62,417
- Cities and towns
- 7 plus 1 CDPs
- ZIP codes
- 12
- Time zone
- Eastern
- FIPS code
- 26127
Cities and towns in Oceana County
Oceana County has 7 incorporated cities, towns and villages. Populations count the people living inside Oceana County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Shelby | Village | 2,185 | |
| Hart (county seat) | City | 2,065 | |
| Pentwater | Village | 909 | |
| Hesperia | Village | 606 | Newaygo County |
| New Era | Village | 462 | |
| Rothbury | Village | 448 | |
| Walkerville | Village | 272 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Mears | 204 |
ZIP codes in Oceana County
12 ZIP codes reach into Oceana County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 49402 also Lake and Mason counties
- 49412 also Newaygo and Muskegon counties
- 49420
- 49421 also Newaygo County
- 49425 also Muskegon and Newaygo counties
- 49436
- 49437 also Muskegon County
- 49446
- 49449 also Mason County
- 49452
- 49455
- 49459 also Newaygo County
Population of Oceana County, 2020–2025
Oceana County grew by 513 people (+1.9%) between April 2020 and July 2025: 187 more deaths than births and a net gain of 721 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 26,717 |
| 2021 | 26,867 |
| 2022 | 26,933 |
| 2023 | 26,976 |
| 2024 | 26,957 |
| 2025 | 27,177 |
Neighboring counties
- Muskegon County south · 177,901 people
- Mason County north · 29,040 people
- Newaygo County east · 51,622 people
- Sheboygan County, Wisconsin west · 118,047 people
- Ozaukee County, Wisconsin west · 94,346 people
- Lake County northeast · 13,182 people
Printable Oceana County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (129 KB)
- PNG (2400 px) (74 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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