Missouri Cities that begin with O

31 cities

City
County
2025 Pop. ↓
O'FallonSt. Charles County95,709
OakvilleSt. Louis County35,229
OzarkChristian County23,909
Old JamestownSt. Louis County20,688
OverlandSt. Louis County15,216
Oak GroveJackson County9,378
OlivetteSt. Louis County9,066
OdessaLafayette County5,658
Osage BeachCamden County4,962
OronogoJasper County3,114
OwensvilleGasconade County2,788
OaklandSt. Louis County1,356
OranScott County1,208
OsceolaSt. Clair County995
OregonHolt County840
OrrickRay County734
Olympian VillageJefferson County712
OttervilleCooper County446
Oak Grove VillageCrawford County394
OsbornDeKalb County376
OakviewClay County359
OzoraSte. Genevieve County298
Old MonroeLincoln County281
Oak RidgeCape Girardeau County238
OakwoodClay County194
Oakwood ParkClay County184
OaksClay County126
OleanMiller County120
Old AppletonCape Girardeau County71
OsgoodGrundy County23
OxlyRipley County11