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
#10082	Olmsted	3,628	1.08	Rare
#10132	Ogburn	3,628	1.08	Rare
#10155	Oshiro	3,628	1.08	Rare
#10191	Oloughlin	3,594	1.07	Rare
#10250	Orndorff	3,594	1.07	Rare
#10268	Orman	3,560	1.06	Rare
#10352	Ottinger	3,527	1.05	Rare
#10396	Onofre	3,527	1.05	Rare
#10505	Orsini	3,493	1.04	Rare
#10626	Ocallaghan	3,426	1.02	Rare
#10751	Odea	3,393	1.01	Rare
#10819	Oldenburg	3,359	1.00	Rare
#10837	Owusu	3,359	1.00	Rare
#10866	Owsley	3,325	0.99	Rare
#10983	Offutt	3,292	0.98	Rare
#10987	Overholt	3,292	0.98	Rare
#11185	Olague	3,225	0.96	Rare
#11226	Oldfield	3,191	0.95	Rare
#11283	Oller	3,191	0.95	Rare
#11395	Odaniel	3,157	0.94	Rare
#11478	Ordway	3,124	0.93	Rare
#11529	Ohearn	3,090	0.92	Rare
#11663	Overbey	3,057	0.91	Rare
#11697	Ortego	3,057	0.91	Rare
#11716	Obannon	3,057	0.91	Rare
#11764	Oddo	3,023	0.90	Rare
#11856	Overcash	3,023	0.90	Rare
#11899	Opperman	2,989	0.89	Rare
#11936	Okane	2,989	0.89	Rare
#11954	Olsson	2,989	0.89	Rare
#12042	Oliveras	2,956	0.88	Rare
#12121	Ogg	2,922	0.87	Rare
#12156	Osbourne	2,922	0.87	Rare
#12320	Okelley	2,889	0.86	Rare
#12384	Oros	2,855	0.85	Rare
#12399	Orantes	2,855	0.85	Rare
#12473	Orme	2,822	0.84	Rare
#12520	Ortman	2,822	0.84	Rare
#12576	Olander	2,788	0.83	Rare
#12683	Orduna	2,788	0.83	Rare
#12696	Organ	2,754	0.82	Rare
#12752	Owensby	2,754	0.82	Rare
#12752	Ohler	2,754	0.82	Rare
#12842	Ogorman	2,721	0.81	Rare
#12944	Okamoto	2,687	0.80	Rare
#12953	Oberle	2,687	0.80	Rare
#13081	Orduno	2,687	0.80	Rare
#13084	Ormond	2,687	0.80	Rare
#13101	Orchard	2,654	0.79	Rare
#13115	Ocon	2,654	0.79	Rare