Last Names Starting with O

2,781 surnames found in U.S. Census data starting with O. Sorted by Census rank.

Rank	Name	Est. Bearers	Per 100K	Rarity
#2865	Orlando	14,343	4.27	Uncommon
#2907	Overstreet	14,040	4.18	Uncommon
#2919	Oglesby	13,973	4.16	Uncommon
#2940	Oates	13,906	4.14	Uncommon
#2970	Oreilly	13,738	4.09	Uncommon
#3032	Osullivan	13,469	4.01	Uncommon
#3309	Otoole	12,361	3.68	Uncommon
#3356	Olguin	12,126	3.61	Uncommon
#3395	Oshea	11,991	3.57	Uncommon
#3412	Olivo	11,924	3.55	Uncommon
#3590	Osman	11,286	3.36	Uncommon
#3596	Olmos	11,252	3.35	Uncommon
#3660	Olivarez	11,084	3.30	Uncommon
#3704	Ong	10,917	3.25	Uncommon
#3722	Ostrander	10,849	3.23	Uncommon
#3815	Ocasio	10,581	3.15	Uncommon
#3896	Olivera	10,379	3.09	Uncommon
#3991	Outlaw	10,144	3.02	Uncommon
#4273	Orosco	9,472	2.82	Rare
#4315	Oden	9,371	2.79	Rare
#4362	Oviedo	9,271	2.76	Rare
#4430	Olmstead	9,136	2.72	Rare
#4535	Orta	8,901	2.65	Rare
#4578	Ordaz	8,834	2.63	Rare
#4610	Ovalle	8,767	2.61	Rare
#4627	Olds	8,733	2.60	Rare
#4631	Omar	8,733	2.60	Rare
#4666	Osuna	8,666	2.58	Rare
#4699	Osburn	8,599	2.56	Rare
#4699	Otis	8,599	2.56	Rare
#4831	Ogrady	8,330	2.48	Rare
#4903	Oaks	8,162	2.43	Rare
#4930	Oxendine	8,129	2.42	Rare
#4965	Oropeza	8,061	2.40	Rare
#5015	Ostrowski	7,961	2.37	Rare
#5201	Orton	7,658	2.28	Rare
#5433	Obryan	7,289	2.17	Rare
#5438	Olivier	7,289	2.17	Rare
#5482	Orth	7,222	2.15	Rare
#5499	Ozuna	7,188	2.14	Rare
#5512	Overby	7,188	2.14	Rare
#5554	Oster	7,121	2.12	Rare
#5619	Osgood	7,054	2.10	Rare
#5630	Obregon	7,020	2.09	Rare
#5649	Orona	6,987	2.08	Rare
#5853	Ochs	6,718	2.00	Rare
#5931	Oliphant	6,617	1.97	Rare
#5967	Olmedo	6,584	1.96	Rare
#5998	Olinger	6,516	1.94	Rare
#6021	Olive	6,516	1.94	Rare