Explore the Family Name Giacomo

The meaning of Giacomo

Italian: from the personal name Giacomo, from Latin Jacobus via Late Latin Jacomus (see James and Jacob). Some characteristic forenames: Italian Domenico, Gino, Salvatore.

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

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

Based on data from the Decennial U.S. Census, the surname Giacomo saw a slight decrease in popularity rank from 45909 in 2000 to 45959 in 2010, a change of -0.11. However, the count of individuals with this surname increased by approximately 6% during the same period, rising from 438 individuals in 2000 to 464 in 2010. The proportion per 100,000 people remained steady at 0.16 across both census years.

20002010Change
Rank#45,909#45,959-0.11%
Count4384645.94%
Proportion per 100k0.160.160%

Race and Ethnicity of people with the last name Giacomo

The ethnic identity associated with the surname Giacomo also shifted slightly between 2000 and 2010, according to the Decennial U.S. Census. In 2000, about 96.12% of those with the surname identified as white, but this figure dropped by 2.02% to 94.18% in 2010. There was an increase in the number identifying as Hispanic from 0% in 2000 to 3.23% in 2010, and in those identifying as American Indian and Alaskan Native, which rose from 0% in 2000 to 1.08% in 2010. The number of individuals identifying with two or more races fell from 2.28% in 2000 to 0% in 2010. No individuals with the surname Giacomo identified as Black or Asian/Pacific Islander in either census year.

20002010Change
White96.12%94.18%-2.02%
Hispanic0%3.23%0%
American Indian and Alaskan Native0%1.08%0%
Asian/Pacific Islander0%0%0%
Two or More Races2.28%0%0%
Black0%0%0%