US Population With Last Name Kopaczewski 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 128 people in the US whose last name was Kopaczewski, and the rate of occurence of the Kopaczewski last name was 0.04 per 100K.
The highest percentage of people with the last name of Kopaczewski identified their race as Non Hispanic White Alone (94.53%); and the second highest percentage of people identified their race as Hispanic or Latino (4.69%).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Kopaczewski last name.
US Population With Last Name Kopaczewski By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic White Alone | 121 | 94.53 |
| Hispanic or Latino | 6 | 4.69 |