Spisak gradova, Amerika (SAD) (pronađeno 17 kom.). Spisak mesta koji počinju na slovo "O":Oak Ridge, Tennessee Oakland, California Oakland Park, Florida Ocala, Florida Oceanside, California (2 kom.) Odessa, Texas O'fallon, Missouri Oklahoma City, Oklahoma Olathe, Kansas Omaha, Nebraska (2 kom.) Ontario, California Opportunity, Washington Orange, California (2 kom.) Orlando, Florida (2 kom.) Ottumwa, Iowa Overland Park, Kansas Oxnard, California