| ZIP Codes: | 12 ZIP Codes (10 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 517 / 810 / 989 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:53 PM |
| Population: | 69,940 [See All] |
| FIPS: | 26155 |
| CBSA: | Owosso, MI |
| Land Area: | 535 sq mi |
| Water Area: | 14 sq mi |
| Coordinates: | 42.9263, -84.1287 |
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69,940 residents live across 12 ZIPs covering 535 sq mi, served by 12 distinct USPS-recognized cities.
Population moved from 70,918 to 69,940 from 2014 to 2024 — a -1.4% change. 5 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 48848 (Laingsburg, $94,519 median) and poorest ZIP 48817 (Corunna, $55,194) are 20.4 miles apart — a 1.7× income gap across local geography.
Median home values vary 1.9× across this county — from $134,100 in 48476 (Vernon) to $261,400 in 48848 (Laingsburg).
Density varies 55× across the county — from 32 people/sq mi in 48841 (Henderson) to 1,793 in 48476 (Vernon).
Educational attainment ranges from 11.2% bachelor's+ in 48857 (Morrice) to 33.9% in 48848 (Laingsburg) — the breadth of educational profiles across the area.
Within Michigan, this is the #27 most populous of 83 counties and ranks #30 for median household income .
Weighted by population, the typical household earns about $69,091 across the county — reflecting what a typical resident sees, not a simple ZIP average.
21.0% of adults age 25+ hold a bachelor's degree or higher (10,523 of 50,069 reporting).
10 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 48867 | Owosso | Standard | 27,500 | $59,825 | 136.0 | -0.5% |
| 48848 | Laingsburg | Standard | 8,344 | $94,519 | 71.8 | 11.7% |
| 48429 | Durand | Standard | 8,241 | $67,725 | 54.2 | 3.6% |
| 48872 | Perry | Standard | 6,142 | $79,333 | 58.3 | -17.1% |
| 48817 | Corunna | Standard | 5,416 | $55,194 | 58.5 | -14.9% |
| 48418 | Byron | Standard | 4,484 | $74,547 | 41.1 | 2.2% |
| 48857 | Morrice | Standard | 3,206 | $75,455 | 25.1 | 20.4% |
| 48460 | New Lothrop | Standard | 2,701 | $80,000 | 35.0 | 22.5% |
| 48414 | Bancroft | Standard | 2,488 | $68,214 | 32.4 | -19.2% |
| 48841 | Henderson | Standard | 729 | $60,156 | 22.5 | -24.2% |
| 48476 | Vernon | PO Box | 689 | $70,000 | 0.4 | -12.8% |
| 48882 | Shaftsburg | PO Box | — | — | 0.0 | — |