St. Clair, Michigan

St. Clair population, 2020 to 2024

St. Clair added 356 residents from July 2020 to July 2024, a change of +6.5%. In the latest year it moved by -10. Among 153 Michigan places of 5,000 or more, that growth ranks 5th; the median place changed by -0.5%. The median place of 5,000+ in Michigan has 12,132 people, so St. Clair is 48% of it.

St. Clair covers 2.94 square miles of land and 0.68 of water, for 1,981 people per square mile of land. The median Michigan place of 5,000+ has 2,478, so St. Clair is less dense than the typical town.

What county St. Clair is in

All of St. Clair's residents live in St. Clair County, which had 160,308 residents in 2024. St. Clair holds 3.6% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in St. Clair

1 ZIP Code Tabulation Area (ZCTA) overlaps St. Clair by at least 10% of the ZCTA's or the city's land: 48079. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where St. Clair is

The Census internal point of St. Clair is at 42.826500, -82.492400. Lansing, the capital, is 104.8 miles W in a straight line. The nearest larger place is Marysville, MI (9,868 people), 5.7 miles away. The nearest city of 100,000 or more is Sterling Heights, MI, 32.1 miles away.

Daylight in St. Clair

At 42.83° N, St. Clair gets about 15 h 21 min of daylight around the June solstice and 9 h 01 min around the December solstice, a swing of 6 h 19 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near St. Clair

The eight nearest incorporated places of 1,000+ in Michigan, measured between internal points. The closest is Marysville, 5.7 miles away, with 9,868 people.