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Jefferson County, MO

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This site is for the people of Jefferson County, all the residents, businesses and others who live and work in our communities

Explore These Local Jefferson County Communities

AntoniaArnoldBarnhartByrnes Mill
Cedar HillCrystal CityDe SotoDesoto
High RidgeHillsboroHorineHouse Springs
ImperialKimmswickLaBarque CreekLake Adelle
LiguoriMapavilleMorse MillOlympian Village
OttoPevelySulphur SpringsValles Mines
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Jefferson County has an area of 664.3 square miles (98.85 % Land 1.15 % Water).
The F.I.P.S. code is 29099.
Latitude: 38.3874, Longitude: -90.4319.

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