Explore the Family Name Treacy
The meaning of Treacy
Irish (Galway): shortened Anglicized form of Gaelic Ó Treasaigh ‘descendant of Treasach’, a personal name meaning ‘warlike’, ‘fierce’. Some characteristic forenames: Irish Colm, Liam.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Treacy in the United States?
According to the Decennial U.S. Census data, the surname Treacy has seen a slight rise in popularity between 2000 and 2010. In the year 2000, Treacy was ranked 17,884th in terms of popularity, but by 2010 it had jumped to rank 17,428, an increase of 2.55%. The number of people with this surname also increased from 1,443 to 1,619 during this period, showing a growth rate of 12.2%. Furthermore, the proportion of people named Treacy per 100,000 individuals rose by 3.77% over the decade.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #17,884 | #17,428 | 2.55% |
| Count | 1,443 | 1,619 | 12.2% |
| Proportion per 100k | 0.53 | 0.55 | 3.77% |
Race and Ethnicity of people with the last name Treacy
The ethnicity associated with the surname Treacy also underwent some changes between 2000 and 2010 based on the Decennial U.S. Census data. The largest ethnic group remains White, although its share decreased slightly from 95.77% to 94.44%. The Hispanic ethnicity saw a modest increase of 24.10%, going from 2.49% to 3.09%. Interestingly, the Black percentage almost doubled, from 0.35% to 0.68%. The proportion of those identifying as two or more races also increased by 23.33%. However, there were no individuals identified as Asian/Pacific Islander in 2010, down from 0.49% in 2000, and the American Indian and Alaskan Native group remained constant at 0%.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 95.77% | 94.44% | -1.39% |
| Hispanic | 2.49% | 3.09% | 24.1% |
| Two or More Races | 0.9% | 1.11% | 23.33% |
| Black | 0.35% | 0.68% | 94.29% |
| Asian/Pacific Islander | 0.49% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |