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Find information and services for Jefferson County residents and visitors, such as online payments, permits, maps, bids, and events. Learn about the county's master plan, ARPA portal, and Juneteenth celebration.
- Assessor
Bob Boyer was elected the first Republican Assessor of...
- Collector
Welcome to the Jefferson County Collector’s homepage. The...
- Departments
The Department of Administrative Services and the Division...
- Recorder of Deeds
The Recorder of Deeds is responsible for recording and...
- Online Service Center
Welcome to the Jefferson County Online Service Center....
- Human Resources
Jefferson County employs 650+ full time and part time...
- Agendas & Minutes
Access easily searchable meeting agendas and minutes for...
- Public Works
Department of Public Works Maple Street Annex 725 Maple...
- Assessor
Jefferson County is located in the eastern portion of the U.S. state of Missouri. It is a part of the St. Louis Metropolitan Area. As of the 2020 census, the population was 226,739, [1] making it the sixth-most populous county in Missouri. Its county seat is Hillsboro. [2]
Gather more information about courts in Jefferson County. Gather information about government services, offices, boards, commissions, and elected officials.
The Department of Administrative Services and the Division of General Services, Contracts and Grants is the administrative arm of Jefferson County government.
Jefferson County, Missouri, Hillsboro, Missouri. 6,620 likes · 30 talking about this · 2 were here. Jefferson County Missouri Government.
In 2022, Jefferson County, MO had a population of 227k people with a median age of 39.9 and a median household income of $77,217. Between 2021 and 2022 the population of Jefferson County, MO grew from 225,913 to 226,984, a 0.474% increase and its median household income grew from $71,285 to $77,217, a 8.32% increase.
Jun 9, 2024 · Learn about the history, cemeteries, and publications of Jefferson County, Missouri. See photos, transcriptions, and articles from the society's museum, newsletters, and events.
