as a Last Name
- 49,458
- people in the U.S. have this name View all people named Callahan
Meaning & Origins
Irish: reduced Anglicized form of Gaelic Ó Ceallacháin ‘descendant of Ceallachán’, a diminutive of the personal name Ceallach, possibly meaning ‘lover of churches’, from ceall ‘church’, or (more likely) ‘bright-headed’, from cen ‘head’ + lach ‘light’. This name was borne by a 10th-century king of Munster, from whom many present-day bearers of the surname claim descent.
| 571st in the U.S. for 2011 |
Nicknames & variations
Quick facts
- Tens of Thousands
- of people in the U.S have this name
- 49,458
- to be exact (as of February 2011)
- Massachusetts
- has the most people named Callahan per capita
Top state populations
U.S. Distribution Map
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