Missouri · FIPS 29183 · County seat: St. Charles
St. Charles County, MO GIS & Parcel Viewer
Here is the direct link to the county parcel map covering St. Charles County, MO: the St. Charles County parcel map. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the St. Charles County parcel map ↗
Opens maps.sccmo.org in a new tab. We link out and never embed or copy parcel data.
St. Charles County at a glance
| Official map | St. Charles County parcel map |
|---|---|
| Type | County-run map |
| Website | maps.sccmo.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | St. Charles |
| Population | 416,659 (2023 Census Bureau estimate) |
| Land area | 561 sq mi |
| FIPS code | 29183 |
About the official source
This map is published by or for St. Charles County itself, so it reflects the local parcel layer rather than a third-party copy. Our October 2026 check found the map open to the public, with no account or payment needed.
How to use the St. Charles County viewer
- Press the button above to open the county's own web map.
- Search for the property or pan and zoom to it.
- Click the lot to bring up what the county publishes about it.
- Look for print or measure tools if you need a quick map or rough size.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
St. Charles County by the numbers
Census Bureau figures put St. Charles County at about 416,659 people (2023 estimate) on roughly 561 square miles of land, which is about 743 residents per square mile. By population it ranks 3rd of 115 counties in Missouri. St. Charles serves as the county seat.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border St. Charles County:
- Franklin County
- Lincoln County
- St. Louis County
- Warren County
- Calhoun County, IL
- Jersey County, IL
- Madison County, IL
Our longer guides
Maps vs. surveys
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.