Explore the Family Name Costley
The meaning of Costley
Irish (Offaly and Down): variant of Costello.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Costley in the United States?
The surname "Costley" has seen a slight decrease in popularity in the United States, as per data from the Decennial U.S. Census. In 2000, it ranked 15,509th, a position that slightly fell to 15,818th in 2010. The count of individuals with this surname increased by 6.23% from 1,733 in 2000 to 1,841 in 2010. However, the proportion per 100,000 people decreased by 3.12% during the same period.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #15,509 | #15,818 | -1.99% |
| Count | 1,733 | 1,841 | 6.23% |
| Proportion per 100k | 0.64 | 0.62 | -3.12% |
Race and Ethnicity of people with the last name Costley
On the subject of ethnic identity, the Decennial U.S. Census indicates some changes over the decade. The percentage of people with the surname Costley identifying as Asian/Pacific Islander decreased by 26.92%. Those identifying as Two or more races saw an increase of 41.16%. White and Black individuals bearing the surname experienced a drop in percentages, with White decreasing by 3.02% and Black by 4.19%. Meanwhile, Hispanic and American Indian and Alaskan Native groups saw a significant rise in numbers, with increases of 112.32% and 123.91%, respectively.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 72.42% | 70.23% | -3.02% |
| Black | 22.45% | 21.51% | -4.19% |
| Two or More Races | 2.77% | 3.91% | 41.16% |
| Hispanic | 1.38% | 2.93% | 112.32% |
| American Indian and Alaskan Native | 0.46% | 1.03% | 123.91% |
| Asian/Pacific Islander | 0.52% | 0.38% | -26.92% |