ZIP Codes of Oceana County, MI

Population & People
Population & People
Total Population
27,512
Household Income
Household Income
Median Income
$62,585
Housing
Housing
Total Housing Units
16,318
Business & Economy
Business & Economy
Total Businesses
486
Employment
Employment
Employment Rate
51.43%
Education
Education
Bachelor's Degree+
21.16%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 8 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:231
Timezone:Eastern (GMT -05:00)
Local Time:2:12:34 PM
Population:27,512 [See All]
FIPS:26127
Land Area:565 sq mi
Water Area:27 sq mi
Coordinates:43.6507, -86.2911
Quick Link:
https://www.zip-codes.com/county/mi-oceana.asp
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Striking education divide
Bachelor's share spans 11.7% to 46.1% — a 34-point gap.

Standout ZIPs in this County


Most Populous
Hart · 6,202 people
22.5% of county total
Highest Income
Pentwater · $80,917 median
1.3× county average
Largest Land Area
Hesperia · 130.5 sq mi
Spans the most ground
Fastest Growth
Shelby · 19.6% (10-yr)
4,538 → 5,429 residents
Most Educated
Pentwater · 46.1% bachelor's+
990 of 2,149 adults 25+

Things worth knowing about Oceana County


27,512 residents live across 8 ZIPs covering 565 sq mi, served by 8 distinct USPS-recognized cities.

Population moved from 27,049 to 27,512 from 2014 to 2024 — a +1.7% change. 5 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 49449 (Pentwater, $80,917 median) and poorest ZIP 49421 (Hesperia, $53,555) are 19.7 miles apart — a 1.5× income gap across local geography.

Median home values vary 2.8× across this county — from $108,300 in 49459 (Walkerville) to $307,300 in 49449 (Pentwater).

Density varies across the county — from 19 people/sq mi in 49459 (Walkerville) to 68 in 49446 (New Era).

Educational attainment ranges from 11.7% bachelor's+ in 49421 (Hesperia) to 46.1% in 49449 (Pentwater) — the breadth of educational profiles across the area.

Within Michigan, this is the #51 most populous of 83 counties and ranks #53 for median household income .

Weighted by population, the typical household earns about $61,328 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.2% of adults age 25+ hold a bachelor's degree or higher (4,173 of 19,719 reporting).

8 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Oceana County


Big & sparse

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.

Total area
565
square miles
Avg density
48.7
people per sq mi
Population
27,512
across 8 ZIPs
Hesperia
130.5 sq mi
5,734 residents
Hart
113.5 sq mi
6,202 residents
Shelby
87.4 sq mi
5,429 residents

All ZIP Codes in Oceana County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
49420HartStandard6,202$58,841113.5-11.1%
49421HesperiaStandard5,734$53,555130.5-1.4%
49455ShelbyStandard5,429$63,62187.419.6%
49449PentwaterStandard2,587$80,91745.95.6%
49452RothburyStandard2,208$55,44143.616.8%
49446New EraStandard2,184$65,21731.9-13.8%
49436MearsStandard1,644$67,27931.86.7%
49459WalkervilleStandard1,524$55,80679.916.9%

Adjacent & Nearby Counties