St. Charles County, MO

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Main / Missouri / St. Charles County / Cities / By population

St. Charles County, Missouri cities by population

Number of cities: 18
Population: 402,377
Largest city: O'Fallon
Table of cities in St. Charles County, Missouri sorted by population from largest to smallest.
CityTypePopulation
O'Falloncity90,802
St. Charlescity70,218
St. Peterscity57,289
Wentzvillecity43,213
Lake St. Louiscity16,665
Dardenne Prairiecity12,689
Cottlevillecity5,408
Weldon Springcity5,348
St. Paulcity2,992
Flint Hillcity1,006
Foristellcity849
Josephvillevillage701
West Altoncity448
New Mellecity382
Portage Des Siouxcity361
Augustatown276
Weldon Spring Heightstown124
DefianceCDP51

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

O'Fallon is the largest city in St. Charles County, Missouri with a population of 90,802.

TOP-5 cities by population in St. Charles County, Missouri:
  • O'Fallon
  • St. Charles
  • St. Peters
  • Wentzville
  • Lake St. Louis