Explore the Family Name Kieran

The meaning of Kieran

Irish (Louth and Monaghan): Anglicized form of Gaelic Ó Ciaráin ‘descendant of Ciarán’, a byname from a diminutive of ciar ‘dark, black-haired’. Variants Ó Cearáin and Ó Céirín exist in Irish, see also Kearns. The personal name Ciarán was borne by two Irish saints, a hermit of the 5th century and the founder of the monastery at Clonmacnoise (died 547).

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Kieran in the United States?

In terms of popularity, based on the Decennial U.S. Census data, the surname Kieran ranked 50,903 in 2000 and improved to 49,461 in 2010, a change of approximately 2.83%. The total count of individuals carrying the Kieran surname also witnessed an increase from 385 in 2000 to 425 in 2010, marking a growth rate of about 10.39%. Interestingly, the proportion of people with this surname per 100k remained unchanged at 0.14.

20002010Change
Rank#50,903#49,4612.83%
Count38542510.39%
Proportion per 100k0.140.140%

Race and Ethnicity of people with the last name Kieran

On the ethnicity front, the Decennial U.S. Census data shows that majority of the individuals with the Kieran surname identified as White, accounting for 97.14% in 2000 and 95.53% in 2010. This represents a slight decrease of 1.66%. In 2010, the data saw the emergence of the Kieran surname among two or more races (1.18%), Hispanic (1.65%), and Black (1.18%) ethnic identities. However, there were no reported instances of this surname among Asian/Pacific Islander and American Indian and Alaskan Native ethnic groups in either 2000 or 2010.

20002010Change
White97.14%95.53%-1.66%
Hispanic0%1.65%0%
Two or More Races0%1.18%0%
Black0%1.18%0%
Asian/Pacific Islander0%0%0%
American Indian and Alaskan Native0%0%0%