| ZIP Codes: | 17 ZIP Codes (15 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 810 / 989 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:53 PM |
| Population: | 40,534 [See All] |
| FIPS: | 26151 |
| Land Area: | 927 sq mi |
| Water Area: | 9 sq mi |
| Coordinates: | 43.4278, -82.7826 |
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40,534 residents live across 17 ZIPs covering 927 sq mi, served by 17 distinct USPS-recognized cities.
Population moved from 41,840 to 40,457 from 2014 to 2024 — a -3.3% change. 5 ZIPs gained residents, 11 lost.
The county's wealthiest ZIP 48465 (Palms, $73,750 median) and poorest ZIP 48450 (Lexington, $52,962) are 25.5 miles apart — a 1.4× income gap across local geography.
Median home values vary 1.8× across this county — from $126,000 in 48426 (Decker) to $222,000 in 48416 (Brown City).
Density varies 18× across the county — from 11 people/sq mi in 48465 (Palms) to 204 in 48450 (Lexington).
Educational attainment ranges from 9.5% bachelor's+ in 48426 (Decker) to 24.5% in 48469 (Port Sanilac) — the breadth of educational profiles across the area.
Within Michigan, this is the #40 most populous of 83 counties and ranks #62 for median household income .
Weighted by population, the typical household earns about $59,560 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.1% of adults age 25+ hold a bachelor's degree or higher (4,693 of 29,192 reporting).
15 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.
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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 48422 | Croswell | Standard | 6,094 | $57,899 | 96.9 | -2.4% |
| 48471 | Sandusky | Standard | 5,414 | $62,844 | 103.0 | -0.6% |
| 48453 | Marlette | Standard | 5,046 | $53,676 | 110.7 | 1.9% |
| 48416 | Brown City | Standard | 4,996 | $66,474 | 112.4 | 3.4% |
| 48450 | Lexington | Standard | 4,320 | $52,962 | 21.2 | -9.5% |
| 48427 | Deckerville | Standard | 2,861 | $56,842 | 99.1 | -0.1% |
| 48419 | Carsonville | Standard | 2,268 | $59,485 | 76.1 | -13.9% |
| 48466 | Peck | Standard | 1,514 | $59,241 | 38.7 | -12.8% |
| 48469 | Port Sanilac | Standard | 1,388 | $56,023 | 7.9 | 21.3% |
| 48472 | Snover | Standard | 1,359 | $61,000 | 70.5 | -30.0% |
| 48401 | Applegate | Standard | 1,323 | $70,536 | 33.1 | -13.3% |
| 48426 | Decker | Standard | 1,317 | $62,169 | 39.3 | 34.5% |
| 48454 | Melvin | Standard | 1,175 | $62,639 | 29.5 | -9.6% |
| 48456 | Minden City | Standard | 788 | $62,321 | 47.2 | -2.4% |
| 48465 | Palms | Standard | 458 | $73,750 | 40.3 | -23.9% |
| 48434 | Forestville | PO Box | 136 | $40,938 | 0.7 | 130.5% |
| 48410 | Argyle | PO Box | 77 | $55,250 | 0.0 | — |