Explore the Family Name Cilley

The meaning of Cilley

1. English: variant of Silley, itself a variant of Seeley. 2. Possibly an Americanized form of German Zille: perhaps a metonymic occupational name for a bargee, from Middle High German zülle ‘barge’, mainly used in Saxony and the Berlin area.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Cilley in the United States?

According to the Decennial U.S. Census, the popularity of the surname Cilley has slightly increased from 2000 to 2010. In 2000, it was ranked as the 27,848th most popular surname in the U.S., but by 2010 it had improved its standing to become the 27,081st most popular. This is a positive change of 2.75%. The number of people bearing this name also saw an increase from 812 in 2000 to 894 in 2010, marking a growth rate of 10.1%. However, the proportion per 100,000 people remained stable at 0.3.

	2000	2010	Change
Rank	#27,848	#27,081	2.75%
Count	812	894	10.1%
Proportion per 100k	0.3	0.3	0%

Race and Ethnicity of people with the last name Cilley

The ethnicity data from the Decennial U.S. Census shows some shifts in the ethnic identities associated with the surname Cilley between 2000 and 2010. In 2000, almost the entire segment (97.41%) identified as white, while 0.99% identified as Hispanic. By 2010, the percentage of those identifying as white had slightly decreased to 95.86%, while the percentage of Hispanics had more than doubled to 2.13%. Additionally, a small percentage was registered under two or more races (0.86% in 2000 and 0.89% in 2010). Notably, there were no individuals with the surname Cilley who identified as Asian/Pacific Islander, Black, or American Indian and Alaskan Native in 2000, but by 2010, 0.56% identified as Asian/Pacific Islander.

	2000	2010	Change
White	97.41%	95.86%	-1.59%
Hispanic	0.99%	2.13%	115.15%
Two or More Races	0.86%	0.89%	3.49%
Asian/Pacific Islander	0%	0.56%	0%
Black	0%	0%	0%
American Indian and Alaskan Native	0%	0%	0%