Jefferson County has offered a plethora of information available on their website with insight as to services provided by the county as well as information on elected officials and area parks. We've included some helpful numbers to get you started:

Jefferson County
P.O. Box 100
Hillsboro, MO 63050
(636) 797-5555
www.jeffcomo.org

County Executive 
Dennis Gannon
(636) 797-5400
Email

Circuit Clerk
Mike Reuter
(636) 797-6367
Email

County Clerk 
Ken Waller
(636) 797-5486
Email

Assessor 
Bob Boyer
(636) 797-5466
Email

Auditor 
Kristy L. Apprill
(636) 797-6427
Email

Collector of Revenue 
Beth Mahn
(636) 797-5406
Email

Prosecuting Attorney 
Trisha Stefanski
(636) 797-5321
Email

Recorder of Deeds 
Debbie Dunnegan-Waters
(636) 797-5414
Email

Sheriff 
Dave Marshak
(636) 797-5000
Email

Treasurer 
Paula Wagner
(636) 797-6270
Email

Public Administrator
Steve Farmer
(636) 797-6112
Email

Additional resources have been included below for your convenience:  

Parks & Recreation
Health & Wellness Classes
Jefferson County Growth Association (JCGA)

Additional County Numbers:

Child Support Division
(636) 797-9840

Child Support Enforcement
(636) 797-5338

Community Action Corp. Head Start
(636) 789-3563

Disability Resource Association
(636) 931-7696

Division of Family Services
(636) 797-9601

Economic Development
(636) 797-5336

Emergency Management
(636) 797-5381

Health Department
Hillsboro - (636) 789-3372
Arnold - (636) 282-1010

Jefferson County Public Works & Highway Department(636) 797-5340

J.C. Transit Program
(636) 937-6454 or (888) 793-9333
Rides available for those with physical and mental disabilities as well as old adults with disabilities.