Last Names Starting with O

2,684 surnames found in U.S. Census data starting with O. Sorted by Census rank.

Rank	Name	Est. Bearers	Per 100K	Rarity
#6008	Oliphant	6,322	1.84	Rare
#6052	Olinger	6,251	1.82	Rare
#6285	Oquinn	5,974	1.74	Rare
#6329	Osteen	5,926	1.73	Rare
#6409	Olszewski	5,849	1.71	Rare
#6423	Oberg	5,836	1.70	Rare
#6455	Ohare	5,809	1.69	Rare
#6550	Oswalt	5,705	1.66	Rare
#6572	Overman	5,673	1.66	Rare
#6676	Omeara	5,575	1.63	Rare
#6866	Oseguera	5,408	1.58	Rare
#6871	Ousley	5,401	1.58	Rare
#6930	Orcutt	5,356	1.56	Rare
#6987	Oliveros	5,315	1.55	Rare
#7177	Owusu	5,149	1.50	Rare
#7180	Ortez	5,147	1.50	Rare
#7413	Oxford	4,976	1.45	Rare
#7444	Omara	4,952	1.44	Rare
#7480	Ogletree	4,924	1.44	Rare
#7492	Otte	4,911	1.43	Rare
#7573	Odum	4,851	1.42	Rare
#7630	Owings	4,794	1.40	Rare
#7704	Orange	4,751	1.39	Rare
#7726	Olea	4,737	1.38	Rare
#7767	Oxley	4,703	1.37	Rare
#7773	Otten	4,697	1.37	Rare
#7863	Ospina	4,641	1.35	Rare
#8126	Obryant	4,472	1.30	Rare
#8213	Olin	4,428	1.29	Rare
#8435	Odle	4,309	1.26	Rare
#8619	Oday	4,194	1.22	Rare
#8758	Ormsby	4,121	1.20	Rare
#8866	Oleson	4,067	1.19	Rare
#9035	Oo	3,979	1.16	Rare
#9265	Ober	3,866	1.13	Rare
#9290	Oyler	3,854	1.12	Rare
#9334	Omer	3,838	1.12	Rare
#9396	Oshaughnessy	3,806	1.11	Rare
#9415	Obando	3,797	1.11	Rare
#9462	Ohalloran	3,772	1.10	Rare
#9534	Ogilvie	3,741	1.09	Rare
#9582	Olivieri	3,721	1.09	Rare
#9623	Oney	3,700	1.08	Rare
#9651	Oloughlin	3,689	1.08	Rare
#9703	Oboyle	3,661	1.07	Rare
#9741	Olmsted	3,645	1.06	Rare
#9749	Ostrom	3,642	1.06	Rare
#9768	Oliveri	3,634	1.06	Rare
#9815	Ouyang	3,612	1.05	Rare
#9818	Oman	3,610	1.05	Rare