Government and civic organizations

The Twin City Area Chamber of Commerce is not a government agency. 

This list has been provided to assist future and existing residents a quick reference. 

MO

Highway Patrol   

636-300-2800

Jefferson County

MO Highway Patrol 636-300-2800  

Sheriff 636-797-5000 

Info 636-797-5555 

Arnold

2101 Jeffco Blvd 

Arnold, MO 63010 

www.arnoldmo.org  

P: 636-296-2100 or 636-282-6600

Byrne's Mill

141 Osage Executive Circle  

Byrnes Mill, MO 63051 

 P: 636-677-7727 | Fax: 636-677-5533  

www.byrnesmill.org

Crystal City

130 Mississippi Ave 

Crystal City, MO 63019 

636-937-4614 

crystalcity@crystalcitymo.org

DeSoto

17 Boyd Street  

DeSoto, MO 63020  

636-586-3326 

Fire 636-586-3888

City of DeSoto MO

Festus  

711 W Main Street 

Festus, MO 63028  

Info 636-937-4694  

Police 636-937-3646  

Fire 636-937-7661 

Public Works/Building Dept. 

636-937-6646

www.festusmo.gov

Herculaneum  

#1 Parkwood Ct  

Herculaneum, MO  63048  

636-475-4447  Police 

636-479-3922  

Fire 636-479-3080  

cityofherculaneum.org

Hillsboro  

101 Main Street P.O. Box 19

 Hillsboro, MO 63050  

636-797-3334   

cityhall@hillsboromo.org

Jefferson R-7 Fire Protection District  

13000 State Road TT

Festus, MO  63028

636-937-6878

www.jeffersonr7fire.org

Kimmswick 

Info 636-464-7407 

Fire 636-797-3619  

Kimmswick's  Website