Explore the Family Name Kilfoyle
The meaning of Kilfoyle
Irish (Tipperary and Offaly): variant of Guilfoyle.
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Kilfoyle in the United States?
Based on the Decennial U.S. Census data, the popularity of the surname Kilfoyle has seen a slight decrease over time. In 2000, it was ranked as the 48,293rd most popular surname and this rank slipped to 52,037 in 2010, marking a change of -7.75%. The count of individuals bearing the surname also dropped from 411 in 2000 to 399 in 2010, denoting a decline of -2.92%. Consequently, the proportion per 100,000 people also saw a slight reduction of -6.67%, moving from 0.15 in 2000 to 0.14 in 2010.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #48,293 | #52,037 | -7.75% |
| Count | 411 | 399 | -2.92% |
| Proportion per 100k | 0.15 | 0.14 | -6.67% |
Race and Ethnicity of people with the last name Kilfoyle
When discussing the ethnic identity associated with the Kilfoyle surname, the Decennial U.S. Census data shows a majority of the bearers of this surname identifying as White. This group made up 96.35% in 2000 and slightly decreased to 96.24% in 2010, a negligible shift of -0.11%. Individuals identifying as Hispanic made up 1.95% in 2000 and dropped to 1.75% in 2010, showing a decrease of -10.26%. Those identifying as two or more ethnicities accounted for 1.70% in 2000 and reduced to 1.25% in 2010, a change of -26.47%. No notable changes were seen in the Asian/Pacific Islander, Black, and American Indian and Alaskan Native categories, as the numbers were either zero or suppressed for privacy (S).
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 96.35% | 96.24% | -0.11% |
| Hispanic | 1.95% | 1.75% | -10.26% |
| Two or More Races | 1.7% | 1.25% | -26.47% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Black | 0% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |