Ranking of St. Charles County, MO Cities and Places By Population in 2021

Updated on August 17, 2024.

Based on the US Census Vintage data estimates, in 2021, among all St. Charles County, MO cities and places, Balance of St. Charles County had the highest population (94.07K), followed by O'Fallon city (93.69K), and St. Charles city (71.08K).

The chart below shows the top 10 cities and places, and the table below shows the ranking of all St. Charles cities and places.

You can see similar information for other Missouri counties. You can also see the ranking of all cities and places in Missouri.

See this for other years:
Ranking of St. Charles County, MO Cities and Places By Population in 2021
Balance of St. Charles County
O'Fallon city
St. Charles city
St. Peters city
Wentzville city
Lake St. Louis city
Dardenne Prairie city
Cottleville city
Weldon Spring city
St. Paul city
Ranking of St. Charles County, MO Cities and Places By Population in 2021
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Rank City or Place Population
1 Balance of St. Charles County 94071
2 O'Fallon city 93694
3 St. Charles city 71082
4 St. Peters city 58209
5 Wentzville city 45554
6 Lake St. Louis city 17315
7 Dardenne Prairie city 12949
8 Cottleville city 5766
9 Weldon Spring city 5308
10 St. Paul city 3301
11 Flint Hill city 826
12 New Melle city 543
13 Josephville village 517
14 West Alton city 355
15 Portage Des Sioux city 330
16 Foristell city (pt.) 285
17 Augusta town 267
18 Weldon Spring Heights town 93