LAST NAME · 2020 CENSUS
Hennessy
Hennessy is the 3,821st most common last name in the United States. In the 2020 Census, 9,053 people carried it, about 3.0 of every 100,000 people. Most people named Hennessy are White.
WHO CARRIES THIS NAME · 2020
White92.1%
Hispanic3.4%
Multiracial3.0%
Asian American0.7%
Black0.6%
Native American0.1%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#5,161
4,974
2000
#3,550
9,187
2010
#3,790
9,338
2020
#3,821
9,053