St. Clair County
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- Population
- 160,221
- Area
- 721.52 sq mi (1,868.73 km²), 114.99 sq mi water
- Median age
- 44.5
- Households
- 67,816
- Persons per household
- 2.3
- Median household income
- $71,270
- Median house value
- $224,600
Demographics: 2020–2024 ACS
Today
81°F
Partly Sunny14% precip
Tonight
61°F
Partly Cloudy12% precip
Sunday
77°F
Partly Sunny then Slight Chance Rain Showers19% precip
Sunday Night
48°F
Chance Rain Showers then Partly Cloudy25% precip
Cities & Towns in St. Clair County
AlgonacBerlin TownshipBrockway TownshipBurtchville TownshipCapacCasco TownshipChina TownshipClay TownshipClyde TownshipColumbus TownshipCottrellville TownshipEast China TownshipEmmettEmmett TownshipFort Gratiot charter TownshipGrant TownshipGreenwood TownshipIra TownshipKenockee TownshipKimball TownshipLakeportLynn TownshipMarine CityMarysvilleMemphisMussey TownshipPearl BeachPort HuronPort Huron charter TownshipRichmondRiley TownshipRubySt. ClairSt. Clair TownshipWales TownshipYale