- Departments A–F
Airport - Smartt Field
The Assessor is charged with placing a fair market value on property as of the tax date.
Look up information about the County Auditor.
Building and Code Enforcement
Learn more about the function of the Building and Code Enforcement Division of Community Development.
Collector of Revenue
See information about the Collector of Revenue.
The Department of Communications plans and coordinates communications about St. Charles County Government.
The Community Development Department is divided into three divisions: Building and Code Enforcement, Development Review, and Planning and Zoning.
Our goal is to be accountable and responsive to you.
The County Counselor's office conducts all the civil law business of the county, its departments, divisions, offices, officers, boards and commissions.
Learn more about the function of the Development Review Division of Community Development.
Learn about voting and elections within the county.
The Department of Emergency Communications is responsible for emergency communications for all field units that protect approximately 350,000 citizens from 34 fire stations and 16 ambulance bases strategically located throughout the county.
The purpose of the St Charles county Division of Emergency Management (DEM) is to promote unified planning and coordination of disaster preparedness, response, and recovery before, during, and after a disaster.
Environmental Health and Protection
Environmental Health and Protection is the branch of public health that is concerned with all aspects of the natural and man-made environment that may affect human health.
View contact information for the County Executive.
The St. Charles County Department of Facilities Management works to protect, safeguard and maintain all county buildings.
The Finance Department administers and coordinates financial services for all St. Charles County Government offices.