Explore the Family Name O’mahoney
The meaning of O’mahoney
Irish: variant of O’Mahony. Some characteristic forenames: Irish Seamus, Senan.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name O’mahoney in the United States?
Based on the Decennial U.S. Census, the popularity of the surname O’Mahoney has seen a slight increase in the United States between 2000 and 2010. In 2000, the surname was ranked 46,153rd in the country, which improved to 43,584th by 2010, indicating a growth rate of 5.57%. The actual count of individuals bearing this surname also increased from 435 in 2000 to 495 in 2010, an increase of 13.79%. The proportion per 100,000 people saw a minor rise from 0.16 in 2000 to 0.17 in 2010, marking a 6.25% change.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #46,153 | #43,584 | 5.57% |
| Count | 435 | 495 | 13.79% |
| Proportion per 100k | 0.16 | 0.17 | 6.25% |
Race and Ethnicity of people with the last name O’mahoney
Turning to ethnic identity, the Decennial U.S. Census data reveals some shifts among those with the O’Mahoney surname between 2000 and 2010. The ethnicity that most commonly carried this name was White, with 95.86% in 2000 decreasing slightly to 93.13% in 2010. There was a noteworthy increase in the Hispanic representation, which grew from 1.61% to 3.84%, a 138.51% change. The proportion of those identifying as Asian/Pacific Islander or part of two or more races saw minimal changes, with the former increasing from 0 to 1.21% and the latter shrinking from 1.15% to 1.01%. No individuals with the O’Mahoney surname identified as Black or American Indian and Alaskan Native in either year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 95.86% | 93.13% | -2.85% |
| Hispanic | 1.61% | 3.84% | 138.51% |
| Asian/Pacific Islander | 0% | 1.21% | 0% |
| Two or More Races | 1.15% | 1.01% | -12.17% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |