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County Resources

Jefferson County Administration Office

Jefferson County, Missouri

729 Maple Street, Hillsboro, MO 63050
636-797-5400
Office of: County Executive - Dennis Gannon / County Clerk - Ken Waller
https://www.jeffcomo.org/ 

Jefferson County Major Cities

City of Arnold

2101 Jeffco Blvd., Arnold, MO 63010
636-296-2100
Mayor - Ron Counts / City Clerk – Tammi Casey
http://www.arnoldmo.org/

City of Crystal City

130 Mississippi Avenue, Crystal City, MO 63019
636-937-4614
Mayor - Thomas V. Schilly / City Clerk – Shelly Steger
http://www.crystalcitymo.org/ 

City of De Soto

17 Boyd Street, De Soto, MO 63020
636-586-3326
Mayor – Rick Lane / City Clerk – Crystal Barton
https://desotomo.com/

City of Festus

711 West Main Street, Festus, MO 63028
636-937-4694
Mayor – Sam Richards / City Clerk – Kerry Patek
http://cityoffestus.org/

City of Herclaneum

#1 Parkwood Court, Herculaneum, MO 63048
636-475-4447
Mayor - Bill Haggard / City Clerk – Jim Kasten
http://www.cityofherculaneum.org

City of Hillsboro

101 Main Street, Hillsboro, MO 63050
636-797-3334
Mayor – Buddy Russell / City Clerk – Jesse Wallis
http://www.hillsboromo.org/ 

City of Kimmswick

P.O. Box 27, Kimmswick, MO 63053
636-464-7407
Mayor – Philip D. Stang / City Clerk – Tammy R. Benack
http://cityofkimmswick.org/ 

City of Pevely

401 Main Street, Pevely, MO 63070
636-475-4452
Mayor – Stephanie Haas / City Clerk – Ashton Lowery
http://www.cityofpevely.net/