Explore the Family Name Sidley
The meaning of Sidley
English: 1. habitational name from Sidley Green in Bexhill (Sussex), from Old English sīd ‘large, spacious, long’ + lēah ‘woodland clearing’. 2. possibly a variant of the Lancashire name Sidlow, itself perhaps from the unrecorded Middle English descendant of an Old English female personal name Sidulufu (formed in a regular way from sidu ‘custom, modesty’ + lufu ‘love’), believed to be be present in the placename Sidlow Bridge in Horley (Surrey).
Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.
How common is the last name Sidley in the United States?
Based on the Decennial U.S. Census, the popularity of the surname Sidley has slightly decreased between 2000 and 2010. In 2000, Sidley was ranked as the 63,297th most popular surname, but by 2010 it had slipped to 66,931st, reflecting a drop of 5.74%. Interestingly though, the actual count of individuals with the Sidley surname remained steady at 295 across both census years. This suggests that while the surname's rank among all U.S. surnames dropped, the number of people carrying this surname remained consistent.
| 2000 | 2010 | Change | |
|---|---|---|---|
| Rank | #63,297 | #66,931 | -5.74% |
| Count | 295 | 295 | 0% |
| Proportion per 100k | 0.11 | 0.1 | -9.09% |
Race and Ethnicity of people with the last name Sidley
The Decennial U.S. Census also provides insight into the ethnicity associated with the Sidley surname. In both 2000 and 2010, a vast majority (95.25%) of people with the Sidley surname identified as White, with no change observed over the decade. A small proportion (3.05%) identified as Black in 2000, but this percentage dropped to zero by 2010. No individuals with the Sidley surname identified as Asian/Pacific Islander, Hispanic, or American Indian and Alaskan Native in either census year. Additionally, there were no individuals who claimed two or more races within this surname category in both 2000 and 2010.
| 2000 | 2010 | Change | |
|---|---|---|---|
| White | 95.25% | 95.25% | 0% |
| Asian/Pacific Islander | 0% | 0% | 0% |
| Two or More Races | 0% | 0% | 0% |
| Hispanic | 0% | 0% | 0% |
| Black | 3.05% | 0% | 0% |
| American Indian and Alaskan Native | 0% | 0% | 0% |