Explore the Family Name Gillan

The meaning of Gillan

Irish: shortened Anglicized form of Gaelic Ó Giolláin, from a diminutive of giolla ‘lad, servant, devotee’. Compare Gill.

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

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

Based on the Decennial U.S. Census data, the surname Gillan saw an increase in popularity between 2000 and 2010. The rank of the surname moved from 16954 to 16848, demonstrating a growth of approximately 0.63%. The actual count of individuals with this surname also increased from 1547 to 1694, indicating a rise of roughly 9.5%. However, the proportion per 100 thousand people remained the same at 0.57.

20002010Change
Rank#16,954#16,8480.63%
Count1,5471,6949.5%
Proportion per 100k0.570.570%

Race and Ethnicity of people with the last name Gillan

In terms of ethnicity, the Decennial U.S. Census data reveals interesting shifts in the ethnic identity associated with the Gillan surname over the same period. There was a significant increase in individuals identifying as Hispanic, with the percentage more than doubling from 1.81 to 4.66. Those reporting as two or more races also saw a substantial jump from 1.29 to 2.24. Meanwhile, the percentage of those identifying as White decreased slightly from 90.69 to 88.08. The data also shows a decrease in the number of people identifying as Black and American Indian and Alaskan Native with the Gillan surname.

20002010Change
White90.69%88.08%-2.88%
Hispanic1.81%4.66%157.46%
Black4.33%3.19%-26.33%
Two or More Races1.29%2.24%73.64%
Asian/Pacific Islander1.42%1.48%4.23%
American Indian and Alaskan Native0.45%0.35%-22.22%