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
#18133	Ouk	1,736	0.51	Rare
#18161	On	1,733	0.51	Rare
#18179	Olivar	1,730	0.50	Rare
#18212	Okelly	1,727	0.50	Rare
#18266	Oliverio	1,721	0.50	Rare
#18380	Osowski	1,707	0.50	Rare
#18513	Odonovan	1,691	0.49	Rare
#18527	Opitz	1,689	0.49	Rare
#18738	Osby	1,667	0.49	Rare
#18820	Orner	1,658	0.48	Rare
#18866	Ottman	1,654	0.48	Rare
#18992	Orrell	1,641	0.48	Rare
#19026	Ottley	1,639	0.48	Rare
#19040	Orihuela	1,638	0.48	Rare
#19158	Ohern	1,625	0.47	Rare
#19259	Oles	1,615	0.47	Rare
#19300	Oltman	1,611	0.47	Rare
#19340	Orea	1,605	0.47	Rare
#19411	Oldaker	1,599	0.47	Rare
#19426	Officer	1,597	0.47	Rare
#19449	Oregel	1,595	0.47	Rare
#19495	Odegaard	1,591	0.46	Rare
#19757	Osorto	1,565	0.46	Rare
#19770	Orgeron	1,564	0.46	Rare
#19770	Osterberg	1,564	0.46	Rare
#19869	Oflaherty	1,555	0.45	Rare
#20034	Obeng	1,541	0.45	Rare
#20050	Osmond	1,540	0.45	Rare
#20050	Ostlund	1,540	0.45	Rare
#20083	Overbeck	1,538	0.45	Rare
#20203	Overfield	1,527	0.45	Rare
#20203	Ozment	1,527	0.45	Rare
#20218	Ogata	1,526	0.45	Rare
#20298	Osmani	1,518	0.44	Rare
#20429	Omari	1,507	0.44	Rare
#20595	Ouzts	1,494	0.44	Rare
#20674	Obaid	1,487	0.43	Rare
#20674	Oviatt	1,487	0.43	Rare
#20708	Ogan	1,484	0.43	Rare
#20760	Orf	1,479	0.43	Rare
#20975	Ocanas	1,461	0.43	Rare
#21026	Ogando	1,457	0.43	Rare
#21086	Obyrne	1,453	0.42	Rare
#21146	Ortner	1,448	0.42	Rare
#21177	Obriant	1,446	0.42	Rare
#21177	Oler	1,446	0.42	Rare
#21262	Otter	1,439	0.42	Rare
#21315	Onken	1,435	0.42	Rare
#21342	Oberst	1,432	0.42	Rare
#21381	Oatis	1,429	0.42	Rare