United States Cities Starting with O
Cities in the United States with population greater than 10,000 starting with the letter $O.
| City | 2022 Population | State |
|---|
| Oklahoma City | 701,266 | Oklahoma |
| Omaha | 501,469 | Nebraska |
| Oakland | 450,630 | California |
| Orlando | 321,427 | Florida |
| Oxnard | 202,895 | California |
| Overland Park | 202,012 | Kansas |
| Ontario | 177,533 | California |
| Oceanside | 175,464 | California |
| Olathe | 144,374 | Kansas |
| Orange | 140,611 | California |
| Odessa | 117,326 | Texas |
| Orem | 100,089 | Utah |
| O'Fallon | 93,714 | Missouri |
| Ogden | 88,221 | Utah |
| Oshkosh | 66,962 | Wisconsin |
| Ocala | 65,047 | Florida |
| Owensboro | 60,767 | Kentucky |
| Orland Park | 59,091 | Illinois |
| Oak Lawn | 58,696 | Illinois |
| Olympia | 57,431 | Washington |
| Oak Park | 55,123 | Illinois |
| Ocoee | 49,639 | Florida |
| Oro Valley | 48,282 | Arizona |
| Oakley | 44,941 | California |
| Oakland Park | 44,803 | Florida |
| Odenton | 44,111 | Maryland |
| Ormond Beach | 44,068 | Florida |
| Oviedo | 41,403 | Florida |
| Olive Branch | 40,957 | Mississippi |
| Owasso | 40,104 | Oklahoma |
| Oregon City | 38,714 | Oregon |
| Oakton | 37,246 | Virginia |
| Oak Creek | 36,907 | Wisconsin |
| Oildale | 36,825 | California |
| Owings Mills | 36,684 | Maryland |
| Oakville | 36,333 | Missouri |
| Olney | 36,216 | Maryland |
| Orangevale | 35,891 | California |
| Oswego | 35,431 | Illinois |
| Oakleaf Plantation | 33,178 | Florida |
| O'Fallon | 33,091 | Illinois |
| Oceanside | 32,743 | New York |
| Orcutt | 32,660 | California |
| Opelika | 31,899 | Alabama |
| Oak Ridge | 31,816 | Tennessee |
| Oak Park | 29,608 | Michigan |
| Orchards | 29,363 | Washington |
| Oakdale | 28,487 | Minnesota |
| Ossining | 28,049 | New York |
| Old Bridge | 27,902 | New Jersey |
| Oak Forest | 27,382 | Illinois |
| Oxford | 26,716 | Mississippi |
| Owatonna | 26,584 | Minnesota |
| Okemos | 25,871 | Michigan |
| Ottumwa | 25,631 | Iowa |
| Oak Ridge | 25,538 | Florida |
| Oak Harbor | 25,132 | Washington |
| Oakdale | 23,683 | California |
| Oxford | 23,367 | Ohio |
| Oxford | 22,213 | Alabama |
| Ozark | 21,976 | Missouri |
| Otsego | 21,246 | Minnesota |
| Oroville | 20,942 | California |
| Ojus | 20,001 | Florida |
| Old Jamestown | 19,912 | Missouri |
| Orinda | 19,888 | California |
| Oregon | 19,882 | Ohio |
| Orange | 19,470 | Texas |
| Onalaska | 19,017 | Wisconsin |
| Oxon Hill | 19,005 | Maryland |
| Ottawa | 18,854 | Illinois |
| Oconomowoc | 18,691 | Wisconsin |
| Ocean Springs | 18,627 | Mississippi |
| Ocean Acres | 18,593 | New Jersey |
| Oak Grove | 17,422 | Oregon |
| Olivehurst | 17,183 | California |
| Opa-locka | 16,711 | Florida |
| Oswego | 16,677 | New York |
| Ocean Pointe | 16,285 | Hawaii |
| Overland | 15,933 | Missouri |
| Opelousas | 15,616 | Louisiana |
| Oldsmar | 15,160 | Florida |
| Owosso | 14,618 | Michigan |
| Orange | 14,344 | Connecticut |
| Ozark | 14,260 | Alabama |
| Oatfield | 14,089 | Oregon |
| Oak Park | 13,916 | California |
| Olean | 13,833 | New York |
| Oak Grove | 13,421 | South Carolina |
| Orangeburg | 13,096 | South Carolina |
| Orange City | 13,038 | Florida |
| Overlea | 12,944 | Maryland |
| Oneonta | 12,915 | New York |
| Olympia Heights | 12,749 | Florida |
| Oakland | 12,746 | New Jersey |
| Ottawa | 12,621 | Kansas |
| Ocean Pines | 12,233 | Maryland |
| Oak Hills | 12,017 | Oregon |
| Ontario | 11,701 | Oregon |
| Oskaloosa | 11,578 | Iowa |
| Oregon | 11,569 | Wisconsin |
| Ocean City | 11,135 | New Jersey |
| Okmulgee | 11,122 | Oklahoma |
| Orange Lake | 10,328 | New York |
| Orono | 10,327 | Maine |
| Oneida | 10,117 | New York |