US Population With Last Name Ildefonzo 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 102 people in the US whose last name was Ildefonzo, and the rate of occurence of the Ildefonzo last name was 0.03 per 100K.
The highest percentage of people with the last name of Ildefonzo identified their race as Non Hispanic Asian and Native Hawaiian and Other Pacific Islander Alone (46.08%); the second highest percentage of people identified their race as Hispanic or Latino (45.1%); and the third highest percentage of people identified their race as Non Hispanic White Alone (5.88%).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Ildefonzo last name.
US Population With Last Name Ildefonzo By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic Asian and Native Hawaiian and Other Pacific Islander Alone | 47 | 46.08 |
| Hispanic or Latino | 46 | 45.1 |
| Non Hispanic White Alone | 6 | 5.88 |