Explore the Family Name Killoran

The meaning of Killoran

Irish (Sligo): Anglicized form of Gaelic Mac Giolla Luaighrinn ‘son of a devotee of (Saint) Luaighreann’, a Sligo saint.

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

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

Based on the Decennial U.S. Census data, the popularity of the surname Killoran saw a slight decrease from 2000 to 2010. In the year 2000, Killoran was ranked 25,430th in terms of most common surnames and held a proportion of 0.34 per 100,000 people. By 2010, it fell slightly in rank to 25,751st and its proportion dipped by 5.88% to 0.32 per 100,000 people. However, the actual count of individuals bearing this surname increased by 4.7%, jumping from 914 to 957 over this ten-year span.

20002010Change
Rank#25,430#25,751-1.26%
Count9149574.7%
Proportion per 100k0.340.32-5.88%

Race and Ethnicity of people with the last name Killoran

In terms of ethnic identity, the Decennial U.S. Census data shows some interesting changes among individuals with the Killoran surname from 2000 to 2010. The majority of Killorans were identified as White in both years, although there was a slight decrease of 2.01% in this group by 2010. Individuals identifying as Hispanic saw the most significant increase, growing by 91.74%. Additionally, the percentage of Killorans who identified with two or more races also grew by 30.07%, while there was a new appearance of those identifying as Asian/Pacific Islander in 2010. There were no recorded individuals with the surname Killoran identifying as Black or American Indian and Alaskan Native in either year.

20002010Change
White96.72%94.78%-2.01%
Hispanic1.09%2.09%91.74%
Two or More Races1.53%1.99%30.07%
Asian/Pacific Islander0%0.73%0%
Black0%0%0%
American Indian and Alaskan Native0%0%0%