US Population With Last Name Macwilliams 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 748 people in the US whose last name was Macwilliams, and the rate of occurence of the Macwilliams last name was 0.25 per 100K.
The highest percentage of people with the last name of Macwilliams identified their race as Non Hispanic White Alone (91.44%); the second highest percentage of people identified their race as Hispanic or Latino (3.88%); and the third highest percentage of people identified their race as Non Hispanic Black or African American Alone (2.27%).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Macwilliams last name.
US Population With Last Name Macwilliams By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic White Alone | 684 | 91.44 |
| Hispanic or Latino | 29 | 3.88 |
| Non Hispanic Black or African American Alone | 17 | 2.27 |
| Non Hispanic Two or More Races | 9 | 1.2 |