Explore the Family Name Gilleran

The meaning of Gilleran

Irish (Roscommon): shortened Anglicized form of Gaelic Mac Giollaráin or Ó Giollaráin, formerly Mac Giolla Éanáin ‘son of the servant of (Saint) Eanán’.

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

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

Based on the Decennial U.S. Census data, the surname Gilleran has seen a slight decrease in popularity from 2000 to 2010. In 2000, it ranked 49,965 in popularity and by 2010, it had slipped slightly to rank 50,960, marking a 1.99% decrease. However, the count of individuals with the Gilleran surname increased by 3.81% during that same time period, rising from 394 to 409 people.

20002010Change
Rank#49,965#50,960-1.99%
Count3944093.81%
Proportion per 100k0.150.14-6.67%

Race and Ethnicity of people with the last name Gilleran

Analyzing the ethnicity associated with the surname Gilleran using the Decennial U.S. Census data, there's been a noticeable shift between 2000 and 2010. The proportion identifying as White dropped from 95.43% to 89.98%, a decrease of 5.71%. On the other hand, the percentage identifying as Hispanic saw a substantial increase from 1.78% to 5.38%, a change of 202.25%. Additionally, the category of Two or More Races saw a minor increase from 1.27% to 1.47%. A small section started identifying their ethnic identity as Asian/Pacific Islander in 2010, while no changes were recorded for Black and American Indian and Alaskan Native identities.

20002010Change
White95.43%89.98%-5.71%
Hispanic1.78%5.38%202.25%
Asian/Pacific Islander0%2.69%0%
Two or More Races1.27%1.47%15.75%
Black0%0%0%
American Indian and Alaskan Native0%0%0%