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.
Oxford
orange, orwell, and Orleans
Ocala
· Onida, South Dakota
Oklahoma, Ohio, and Oregon.
i don't know many but there is one called ohio- in america.
Reno, Nevada or Rio Claro, Colombia
Orange is a city in New South Wales, Australia.
Some southern US cities that start with the letter O:Oak Ridge, TennesseeOcilla, GeorgiaOdessa, TexasOpelika, AlabamaOlive Branch, MississippiOpelousas, LouisianaOrangeburg, South CarolinaOrlando, FloridaOzark, Arkansas