Explore the Family Name Kostelac
The meaning of Kostelac
Croatian: habitational name denoting someone from the Kostelsko region in Lower Carniola, Slovenia (see Kostelec 1). Compare Costello.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Kostelac in the United States?
Based on the Decennial U.S. Census, the surname Kostelac experienced a slight decrease in popularity between 2000 and 2010. In 2000, it held the rank of 66,274, which dropped to 69,996 by 2010, indicating a negative change of 5.62%. However, despite the dip in its ranking, the count of individuals with the Kostelac surname remained virtually unchanged, growing marginally from 279 to 280. This increase represents a change of 0.36%, though the proportion per 100k people decreased by 10% over the same period.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #66,274 | #69,996 | -5.62% |
| Count | 279 | 280 | 0.36% |
| Proportion per 100k | 0.1 | 0.09 | -10% |
Race and Ethnicity of people with the last name Kostelac
Regarding ethnicity, the Kostelac surname was predominantly associated with white ethnic identity in both 2000 and 2010, according to the Decennial U.S. Census data. In 2000, the percentage of individuals identifying as white was 98.21%. By 2010, this figure had slightly decreased to 97.14%, reflecting a change of -1.09%. The census data did not record any individuals with the Kostelac surname identifying as Asian/Pacific Islander, two or more races, Hispanic, Black, or American Indian and Alaskan Native in either 2000 or 2010.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 98.21% | 97.14% | -1.09% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 0% | 0% | 0% |
| Hispanic | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |