Explore the Family Name Mahaffy
The meaning of Mahaffy
Irish: variant of Mahaffey (see McHaffie).
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Mahaffy in the United States?
Based on the Decennial U.S. Census data, the surname Mahaffy saw a modest rise in popularity between 2000 and 2010. In 2000, it was ranked as the 29,625th most common name in the U.S., but by 2010 it had climbed to the 28,618th spot, representing a 3.4% increase. The number of individuals carrying the Mahaffy name also grew from 750 in 2000 to 833 in 2010, marking an 11.07% jump. However, when calculated per 100,000 people, the proportion remained consistent at 0.28 in both years.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #29,625 | #28,618 | 3.4% |
| Count | 750 | 833 | 11.07% |
| Proportion per 100k | 0.28 | 0.28 | 0% |
Race and Ethnicity of people with the last name Mahaffy
The ethnicity of those with the Mahaffy surname showed some shifts between 2000 and 2010, according to the Decennial U.S. Census data. The majority identified as White, although this representation decreased slightly from 94.13% in 2000 to 92.44% in 2010. Those identifying as Hispanic made up the second largest group, seeing a significant increase from 1.87% to 3.24% over the decade. The percentage of individuals with the Mahaffy surname who identified as Black saw a minor decrease from 2.67% to 2.64%. Meanwhile, those identifying with two or more races increased from 0.80% to 0.96%. No individuals claimed Asian/Pacific Islander or American Indian and Alaskan Native ethnic identities in either year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 94.13% | 92.44% | -1.8% |
| Hispanic | 1.87% | 3.24% | 73.26% |
| Black | 2.67% | 2.64% | -1.12% |
| Two or More Races | 0.8% | 0.96% | 20% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |