St. Clair County, Missouri Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Appleton City11,0911,0341.3%9501.1City
Osceola29839351.24%9111.1City
Lowry City36566161.55%6391.0City
Collins41331270.76%5380.2Village
Roscoe596911.05%631.5Village
Vista636340%2750.1Village

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in St. Clair County, Missouri?

Appleton City is the largest city in St. Clair County.

What is the smallest city in St. Clair County, Missouri?

Vista is the smallest city in St. Clair County.

How many cities are in St. Clair County?

There are 6 cities in St. Clair County, Missouri.

Frequently Asked Questions