US Population With Last Name Mrowczynski 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 155 people in the US whose last name was Mrowczynski, and the rate of occurence of the Mrowczynski last name was 0.05 per 100K.
The highest percentage of people with the last name of Mrowczynski identified their race as Non Hispanic White Alone (98.06%).
The table below below shows by race and ethnicity, the number of people and the percentage of the total people with the Mrowczynski last name.
US Population With Last Name Mrowczynski By Race And Ethniciity in the 2010 Census
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| Last Name | Number of People | Percent of Total (%) |
|---|---|---|
| Non Hispanic White Alone | 152 | 98.06 |