Missouri

St. Charles

405,262
2020 population
1810
first census record
22
census records

About St. Charles

St. Charles, Missouri, first appears in the United States federal census in 1810, when it recorded a population of 3,505. At the most recent census, in 2020, its population stood at 405,262.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 5 documented military engagements have been recorded within the county, among them Battle of the Sink Hole, St. Charles Skirmish (St. Charles County), Dardenne Prairie Skirmish (St. Charles County), and 40 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020405,262
2010360,485
2000283,883
1990212,907
1980144,107
197092,954
196052,970
195029,834
194025,562
193024,354
192022,828
191024,695
190024,474
189022,977
188023,065
187021,304
186016,523
185011,454
18407,911
18304,320
18203,970
18103,505
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in St. Charles

Military engagements that took place in St. Charles, Missouri.

Battle of the Sink Hole
1815
St. Charles Skirmish (St. Charles County)
1861
Dardenne Prairie Skirmish (St. Charles County)
1862
Union Gunboat Patrol on Missouri River
1862
Wentzville Skirmish (St. Charles County)
1862

Historic places in St. Charles

National Register of Historic Places listings in St. Charles, Missouri.

First Missouri State Capitol Buildings
St. Charles
Newbill-McElhiney House
St. Charles
Sehrt, August, House
Augusta
St. Charles Odd Fellows Hall
St. Charles
Hays, Daniel Boone, House
Defiance
Boone, Daniel, House
Defiance
Wentzville Tobacco Company Factory
Wentzville
Lindenwood Neighborhood Historic District
St. Charles
Lindenwood Hall
St. Charles
St. Mary's Institute of O'Fallon
O'Fallon
Midtown Neighborhood Historic District
St. Charles
St. Paul's Church
New Melle
Frenchtown Historic District
St. Charles
Staudinger-Grumke House-Store
Augusta
Walnut Street Historic District
Augusta
Augusta Harmonie Verein
Augusta
Mt. Pleasant Winery Historic District
Augusta
Harold-Knoernschild Farmstead Historic District
Augusta
St. Charles Historic District
St. Charles
Browse all Missourihistoric sites ›

Other counties in Missouri

Explore census history and historic records for more Missouri counties.

ReynoldsRipleySalineSchuylerScotlandScottShannonShelbySt. ClairSt. FrancoisSt. LouisSt. Louis citySte. GenevieveStoddardStoneSullivanTaneyTexasVernonWarren
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Everything a full report reveals about St. Charles County, Missouri

This page charts the census history of St. Charles County, Missouri. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about St. Charles

When does St. Charles first appear in the US census?
St. Charles, Missouri first appears in the federal census in 1810, with a recorded population of 3,505.
What is the population of St. Charles?
At the most recent federal census (2020), St. Charles had a recorded population of 405,262.
Were any battles fought in St. Charles?
5 documented military engagements took place in St. Charles, including Battle of the Sink Hole, St. Charles Skirmish (St. Charles County), Dardenne Prairie Skirmish (St. Charles County).
How many historic places are in St. Charles?
40 sites are listed on the National Register of Historic Places in St. Charles, Missouri.
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