Explore the Family Name Mulrooney

The meaning of Mulrooney

Irish (Kilkenny): variant of Moroney. Some characteristic forenames: Irish Brennan.

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

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

According to the Decennial U.S. Census data, the surname Mulrooney has seen a slight increase in popularity between 2000 and 2010. The rank of the surname climbed from 23,037 in 2000 to 22,978 in 2010 - a growth rate of 0.26%. The count of individuals with this last name also rose from 1,036 to 1,113 during the same period, an increase of approximately 7.43%.

20002010Change
Rank#23,037#22,9780.26%
Count1,0361,1137.43%
Proportion per 100k0.380.380%

Race and Ethnicity of people with the last name Mulrooney

In terms of ethnic identity, the Mulrooney surname showed some interesting shifts based on the Decennial U.S. Census data. In 2000, 98.07% of those with this surname were White, which slightly decreased to 97.12% by 2010. The percentage of Asian/Pacific Islanders dropped entirely from 0.58% in 2000 to none by 2010. Conversely, there was a considerable increase in those identifying as Hispanic, from 0.87% in 2000 to 1.62% in 2010. A new group emerged as well - those identifying with two or more races, accounting for 0.45% in 2010. There were no changes among those identifying as Black or American Indian and Alaskan Native.

20002010Change
White98.07%97.12%-0.97%
Hispanic0.87%1.62%86.21%
Two or More Races0%0.45%0%
Asian/Pacific Islander0.58%0%0%
Black0%0%0%
American Indian and Alaskan Native0%0%0%