How Common Is the Last Name Obrien?

Estimated U.S. bearers of the surname Obrien today

131,269

Ranked #258 of 162,254 published surnames · 40.19 per 100,000 Americans (2010 Census) · 118,557 bearers counted in 2010, scaled to today's population.

Combine Obrien with a first name →

Ancestry breakdown reported in the 2010 Census

White

93.85%

Black

1.29%

Asian / Pacific Islander

0.76%

Hispanic

2.32%

Percentages are the Census Bureau's published figures for surname bearers in 2010. Figures are estimates from public records — see the methodology page.