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
#9868	Olney	3,586	1.05	Rare
#10003	Ocallaghan	3,527	1.03	Rare
#10050	Oconner	3,506	1.02	Rare
#10063	Ogburn	3,501	1.02	Rare
#10105	Orlowski	3,486	1.02	Rare
#10371	Orndorff	3,387	0.99	Rare
#10391	Obrian	3,382	0.99	Rare
#10391	Orsini	3,382	0.99	Rare
#10419	Onofre	3,376	0.98	Rare
#10451	Osterman	3,363	0.98	Rare
#10489	Orman	3,347	0.98	Rare
#10576	Oliveras	3,316	0.97	Rare
#10618	Odea	3,299	0.96	Rare
#10649	Overholt	3,287	0.96	Rare
#10652	Oshiro	3,285	0.96	Rare
#10690	Owsley	3,274	0.96	Rare
#10732	Oldenburg	3,259	0.95	Rare
#10747	Osei	3,252	0.95	Rare
#10795	Ocegueda	3,237	0.94	Rare
#10954	Ottinger	3,186	0.93	Rare
#11111	Offutt	3,126	0.91	Rare
#11124	Ohearn	3,121	0.91	Rare
#11283	Okafor	3,071	0.90	Rare
#11453	Orantes	3,017	0.88	Rare
#11474	Olague	3,011	0.88	Rare
#11578	Oldfield	2,978	0.87	Rare
#11585	Ordway	2,977	0.87	Rare
#11637	Odaniel	2,959	0.86	Rare
#11656	Oberholtzer	2,952	0.86	Rare
#11664	Orme	2,951	0.86	Rare
#11755	Obannon	2,923	0.85	Rare
#11789	Olsson	2,914	0.85	Rare
#11805	Ortman	2,908	0.85	Rare
#11971	Ogg	2,861	0.83	Rare
#11996	Oller	2,852	0.83	Rare
#12005	Overcash	2,848	0.83	Rare
#12031	Oddo	2,840	0.83	Rare
#12038	Overbey	2,839	0.83	Rare
#12104	Oceguera	2,819	0.82	Rare
#12253	Ojo	2,781	0.81	Rare
#12312	Oros	2,765	0.81	Rare
#12365	Okeeffe	2,751	0.80	Rare
#12374	Okelley	2,749	0.80	Rare
#12517	Ogorman	2,711	0.79	Rare
#12526	Osbourne	2,709	0.79	Rare
#12526	Owner	2,709	0.79	Rare
#12545	Orchard	2,704	0.79	Rare
#12618	Okane	2,679	0.78	Rare
#12638	Owensby	2,675	0.78	Rare
#12661	Ocon	2,671	0.78	Rare