US Population With Last Name Duffy By Race and Ethnicity in the 2010 Census
Updated on December 11, 2025.
Data Source: US Census Bureau.
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In the 2010 Census, there were 38,835 people in the US whose last name was Duffy, and the rate of occurence of the Duffy last name was 13.17 per 100K.
The race of 90.71% of the people with the last name of Duffy was Non Hispanic White Alone (i.e. 35,227 people); 4.25% was Non Hispanic Black or African American Alone (i.e. 1,650 people); and 2.25% was Hispanic or Latino (i.e. 874 people).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Duffy last name.
US Population With Last Name Duffy By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic White Alone | 35227 | 90.71 |
| Non Hispanic Black or African American Alone | 1650 | 4.25 |
| Hispanic or Latino | 874 | 2.25 |
| Non Hispanic Two or More Races | 633 | 1.63 |
| Non Hispanic Asian and Native Hawaiian and Other Pacific Islander Alone | 260 | 0.67 |
| Non Hispanic American Indian and Alaska Native Alone | 190 | 0.49 |