LAST NAME · 2020 CENSUS
Hennessey
Hennessey is the 4,451st most common last name in the United States. In the 2020 Census, 7,726 people carried it — about 2.6 of every 100,000 people. Most people named Hennessey are White.
WHO CARRIES THIS NAME · 2020
White91.3%
Hispanic3.7%
Multiracial3.1%
Asian American0.9%
Black0.8%
Native American0.1%
Shares are tabulated by the US Census Bureau, not modeled. Methodology.
RANK OVER TIME
1990
#4,497
7,461
2000
#4,076
8,036
2010
#4,245
8,357
2020
#4,451
7,726