How Many People Have the Last Name Hennessey?
people had the surname Hennessey in the 2010 US Census
About 1 in 35,336 people in the Census had this surname
Source: Census Bureau surname list
Surname Rank
Of 162,253 surnames
Per 100,000 People
In 2010
Largest Group
White
Change Since 2000
+321 people
👥 Race and Hispanic Origin
Most people with the surname Hennessey (94.7%) are non-Hispanic White. Among surnames where most people are non-Hispanic White, Hennessey ranks #3,208. The mix barely changed from 2000: no group's share moved by 2 points or more.
📈 Change Since 2000
Hennessey grew from 8,036 people in 2000 to 8,357 in 2010 (up 4%), and its rank fell from #4,076 to #4,245. The population grew faster, so its share still fell, from 2.98 to 2.83 people per 100,000.
| 2000 | 2010 | |
|---|---|---|
| People | 8,036 | 8,357 |
| Rank | #4,076 | #4,245 |
| Per 100,000 people | 2.98 | 2.83 |
🏆 Surnames Ranked Near Hennessey
🔊 Surnames That Sound Alike
Same Soundex code as Hennessey: H520
👤 Hennessey as a First Name
Hennessey is a first name too: about 380 people alive in the US today have it as a first name, an estimate from Social Security birth records.
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