US Population With Last Name Koster 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 6,580 people in the US whose last name was Koster, and the rate of occurence of the Koster last name was 2.23 per 100K.
The highest percentage of people with the last name of Koster identified their race as Non Hispanic White Alone (94.24%); the second highest percentage of people identified their race as Hispanic or Latino (2.11%); and the third highest percentage of people identified their race as Non Hispanic Black or African American Alone (1.23%).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Koster last name.
US Population With Last Name Koster By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic White Alone | 6201 | 94.24 |
| Hispanic or Latino | 139 | 2.11 |
| Non Hispanic Black or African American Alone | 81 | 1.23 |
| Non Hispanic Two or More Races | 70 | 1.06 |
| Non Hispanic American Indian and Alaska Native Alone | 48 | 0.73 |
| Non Hispanic Asian and Native Hawaiian and Other Pacific Islander Alone | 41 | 0.62 |