· Oak Ridge, Tennessee
· White House, Tennessee
Ohio?
OregonOxford
I am not aware of any cities in Massachusetts that start with the letter O. However, Oxford, Orange, Orleans, Oak Bluff, and Otis are towns in Massachusetts.
orange, orwell, and Orleans
Ocala
Oxford
Oklahoma, Ohio, and Oregon.
· Onida, South Dakota
i don't know many but there is one called ohio- in america.
Orange is a city in New South Wales, Australia.
Reno, Nevada or Rio Claro, Colombia
Some southern US cities that start with the letter O:Oak Ridge, TennesseeOcilla, GeorgiaOdessa, TexasOpelika, AlabamaOlive Branch, MississippiOpelousas, LouisianaOrangeburg, South CarolinaOrlando, FloridaOzark, Arkansas