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Jefferson County, Missouri

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Please add profiles of those who were born, lived or died in Jefferson County, Missouri.

Official Website

The county was organized in 1818 and named in honor of former president Thomas Jefferson.

Adjacent Counties


  • Arnold
  • Byrne's Mill
  • Crystal City
  • De Soto
  • Festus
  • Herculaneum
  • Hillsboro (County Seat)
  • Kimmswick
  • Olympian Village
  • Pevely

Other Villages, Townships & Communities: Barnhart, Cedar Hill, Cedar Hill Lakes, Central, Danby, Dittmer, Fletcher, Grubville, Hematite, High Ridge, Horine, House Springs, Imperial, Joachim, LaBarque Creek, Liguori, Mapaville, Meramac, Morse Mill, Murphy, Parkdale, Peaceful Village, Plattin, River View, Rock, Scotsdale, Seckman, Sulphur Springs, Valle, Valles Mines and Windsor



Middle Mississippi River Nat'l Wildlife Refuge (part)

Nat'l Reg. of Hist. Places