US Population With Last Name Mcwilliams 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 20,523 people in the US whose last name was Mcwilliams, and the rate of occurence of the Mcwilliams last name was 6.96 per 100K.
The highest percentage of people with the last name of Mcwilliams identified their race as Non Hispanic White Alone (76.7%); the second highest percentage of people identified their race as Non Hispanic Black or African American Alone (17.64%); and the third highest percentage of people identified their race as Hispanic or Latino (2.53%).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Mcwilliams last name.
US Population With Last Name Mcwilliams By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic White Alone | 15741 | 76.7 |
| Non Hispanic Black or African American Alone | 3620 | 17.64 |
| Hispanic or Latino | 519 | 2.53 |
| Non Hispanic Two or More Races | 400 | 1.95 |
| Non Hispanic American Indian and Alaska Native Alone | 127 | 0.62 |
| Non Hispanic Asian and Native Hawaiian and Other Pacific Islander Alone | 115 | 0.56 |