Jefferson County Seal
Jefferson County,
Missouri
Est. 1818
Photo of Rockford Beach Photo of Admin Building Photo of Annex Building Photo of Court House Photo of Soccer Game Photo of Detention Center Photo of Justice Center Photo of Law Enforcement Memorial Photo of Child Fishing Photo of Sheriff Dept Jail Photo of Sheriff East Zone building Photo of Sheriff North Zone building
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News and Events

Stormwater Code - Notice of Public Hearing
Monday, August 10, 2020 at 6:30 p.m. at the Jefferson County Administration Center, 729 Maple Street, Hillsboro, Missouri.
Unofficial Election Results - August 4, 2020
August 4, 2020 Primary Election Unofficial Results
August 4, 2020 Election Information
View your Sample Ballot, a County Wide Sample Ballot, Absentee Applications and more important election information.
US Census 2020
Jefferson County, MO Counts US Census 2020
Warming Centers in Jefferson County
A list of local warming centers.