About Jefferson County
Jefferson County is a county in Missouri (MO) with a population of approximately 231,230 residents. The county seat is .
Jefferson County is one of the counties that make up Missouri, providing local government services including law enforcement, property records, courts, and public infrastructure to its residents.
County Details
- County
- Jefferson County
- State
- Missouri (MO)
- Population
- 231,230
- County Seat
Local Government
Jefferson County residents are served by county-level government that typically includes:
- County commission or board of supervisors — Elected officials responsible for county governance, budgets, and policy
- Sheriff's office — Provides law enforcement services throughout Jefferson County
- County clerk — Manages vital records, elections, and property records
- County courts — The judicial branch serving Jefferson County residents
- Tax assessor — Handles property tax assessments and collections
Getting Involved
Residents of Jefferson County can participate in local government by attending county commission meetings, voting in local elections, and contacting their county and state representatives. Find your elected officials by browsing the Missouri representatives page.
Frequently Asked Questions
What is the population of Jefferson County?
Jefferson County has an approximate population of 231,230 residents.
What is the county seat of Jefferson County?
The county seat of Jefferson County is .
What state is Jefferson County in?
Jefferson County is located in Missouri (MO).