US Population With Last Name Hannahan By Race and Ethnicity in the 2010 Census
Updated on May 9, 2026.
Data Source: US Census Bureau.
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In the 2010 Census, there were 141 people in the US whose last name was Hannahan, and the rate of occurence of the Hannahan last name was 0.05 per 100K.
The highest percentage of people with the last name of Hannahan identified their race as Non Hispanic White Alone (93.62%); and the second highest percentage of people identified their race as Non Hispanic Black or African American Alone (3.55%).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Hannahan last name.
US Population With Last Name Hannahan By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic White Alone | 132 | 93.62 |
| Non Hispanic Black or African American Alone | 5 | 3.55 |