St. Louis, Michigan

St. Louis population, 2020 to 2024

St. Louis added 10 residents from July 2020 to July 2024, a change of +0.1%. In the latest year it moved by -11. Among 153 Michigan places of 5,000 or more, that growth ranks 59th; the median place changed by -0.5%. The median place of 5,000+ in Michigan has 12,132 people, so St. Louis is 62% of it.

St. Louis covers 3.30 square miles of land and 0.19 of water, for 2,262 people per square mile of land. The median Michigan place of 5,000+ has 2,478, so St. Louis is close to the typical town.

What county St. Louis is in

All of St. Louis's residents live in Gratiot County, which had 41,372 residents in 2024. St. Louis holds 18.0% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in St. Louis

1 ZIP Code Tabulation Area (ZCTA) overlaps St. Louis by at least 10% of the ZCTA's or the city's land: 48880. 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. Louis is

The Census internal point of St. Louis is at 43.408500, -84.611200. Lansing, the capital, is 46.7 miles S in a straight line. The nearest larger place is Alma, MI (9,349 people), 2.9 miles away. The nearest city of 100,000 or more is Lansing, MI, 48.0 miles away.

Daylight in St. Louis

At 43.41° N, St. Louis gets about 15 h 25 min of daylight around the June solstice and 8 h 57 min around the December solstice, a swing of 6 h 27 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near St. Louis

The eight nearest incorporated places of 1,000+ in Michigan, measured between internal points. The closest is Alma, 2.9 miles away, with 9,349 people.