Explore the Family Name Colahan
The meaning of Colahan
Irish: 1. variant of Callahan. 2. variant of Colohan, from Mac Uallocháin ‘son of Uallachán’, a personal name from a diminutive of uallach ‘proud’.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Colahan in the United States?
Based on data from the Decennial U.S. Census, the popularity of the surname Colahan experienced a slight decline between 2000 and 2010. In 2000, it was ranked 74,675th in terms of popularity and fell to 86,645th in 2010 - a change of -16.03%. Similarly, the count of people with this surname also decreased from 241 in 2000 to 215 in 2010, marking a decrease of -10.79%. The proportion of the U.S. population with this surname per 100,000 people also saw a drop from 0.09 to 0.07, representing a -22.22% change.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #74,675 | #86,645 | -16.03% |
| Count | 241 | 215 | -10.79% |
| Proportion per 100k | 0.09 | 0.07 | -22.22% |
Race and Ethnicity of people with the last name Colahan
In regards to ethnicity, the Decennial U.S. Census data shows that the majority of individuals with the surname Colahan identified as White, both in 2000 (95.85%) and 2010 (95.81%). There was no significant change in this ethnic identity over the decade, with only a minor decrease of -0.04%. Notably, there was an emergence of the Hispanic ethnic identity among those with the surname Colahan in 2010, as 2.79% of individuals identified as such, despite no representation in 2000. There were no individuals with the surname Colahan who identified as Asian/Pacific Islander, Black, or American Indian and Alaskan Native during either census year.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 95.85% | 95.81% | -0.04% |
| Hispanic | 0% | 2.79% | 0% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |