Last names starting with O

83 last names starting with O rank in the top 5,000 of the 2020 Census. The most common are Ortiz, Owens and Olson. Each links to its own page; the number beside it is its national rank.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Oakes #2,061
Oakley #2,123
Oaks #4,946
Oates #3,417
Obrien #261
Ocampo #1,368
Ocasio #3,560
Ochoa #408
Oconnell #986
Oconnor #416
Odell #1,180
Oden #4,483
Odom #1,040
Odonnell #784
Ogden #1,950
Ogle #2,629
Oglesby #2,985
Ogrady #4,834
Oh #1,808
Ohara #1,671
Ojeda #1,625
Okeefe #2,100
Oldham #2,826
Olds #4,702
Oleary #1,607
Olguin #3,431
Oliva #1,833
Olivares #1,504
Olivarez #3,623
Olivas #1,830
Oliveira #1,694
Oliver #278
Olivera #3,822
Olivo #3,231
Olmos #3,620
Olmstead #4,382
Olsen #571
Olson #166
Olvera #1,285
Omalley #2,045
Omar #3,062
Oneal #733
Oneil #1,230
Oneill #673
Ong #3,350
Ontiveros #2,283
Ordaz #4,635
Ordonez #1,774
Oreilly #2,913
Orellana #1,144
Orlando #2,939
Ornelas #1,611
Oropeza #4,937
Orosco #4,954
Orourke #2,197
Orozco #500
Orr #795
Orta #4,592
Ortega #243
Ortiz #68
Osborn #1,111
Osborne #513
Osburn #4,763
Oshea #3,366
Osman #2,770
Osorio #1,162
Ostrander #3,825
Osullivan #2,941
Osuna #4,657
Oswald #2,536
Otero #1,617
Otis #4,789
Otoole #3,297
Ott #1,390
Otto #1,595
Ouellette #2,664
Outlaw #4,030
Ovalle #4,626
Overstreet #3,068
Overton #1,983
Oviedo #4,076
Owen #561
Owens #143