- Oachs #75,317
- Oak #23,019
- Oakden #68,547
- Oake #160,975
- Oakerson #120,901
- Oakes #2,065
- Oakeson #67,126
- Oakey #39,555
- Oakford #128,249
- Oakgrove #157,234
- Oakie #146,201
- Oakland #21,700
- Oakleaf #53,419
- Oakley #2,099
- Oakman #22,689
- Oaks #4,903
- Oalmann #139,228
- Oancea #123,064
- Oandasan #95,115
- Oar #78,821
- Oard #70,403
- Oare #94,311
- Oas #34,574
- Oasay #89,069
- Oase #129,825
- Oaster #133,863
- Oates #2,940
- Oathout #39,773
- Oatis #25,486
- Oatley #48,800
- Oatman #14,257
- Oatney #124,548
- Oats #21,307
- Oatsvall #82,613
- Oatts #72,771
- Oatway #154,907
- Oaxaca #34,707