Explore the Family Name De Cotis

The meaning of De Cotis

Altered form (also Decotis) of Italian De Cotiis: patronymic from Coti, itself probably a nickname or a metonymic occupational name from the plural form of cote ‘whetstone’. It is formed with the Latin ablative plural suffix -is imparting the broader sense ‘belonging to, of’, in this case ‘member of the Coti family’. Some characteristic forenames: Italian Antonio, Alfonso, Josefina.

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

How common is the last name De Cotis in the United States?

Based on the Decennial U.S. Census data, the surname De Cotis experienced a decrease in popularity between 2000 and 2010. In 2000, it ranked as the 73,931st most popular surname, but fell to 82,613th by 2010, marking an 11.74% drop. The overall count of individuals bearing the name also diminished during this decade, falling from 244 to 228, a decrease of roughly 6.56%. Consequently, the proportion per 100,000 people dropped by 11.11%, from 0.09 to 0.08.

	2000	2010	Change
Rank	#73,931	#82,613	-11.74%
Count	244	228	-6.56%
Proportion per 100k	0.09	0.08	-11.11%

Race and Ethnicity of people with the last name De Cotis

As for the ethnicity associated with the De Cotis surname, the Decennial U.S. Census data reveals that nearly all bearers of this name identified as White in both 2000 and 2010. Specifically, 97.13% identified as such in 2000, decreasing slightly to 95.18% in 2010 — a change of -2.01%. There were no recorded instances of the surname among Asian/Pacific Islander, Black, Hispanic, or American Indian and Alaskan Native communities in either year. Similarly, there were no reported cases of individuals identifying with two or more races bearing the De Cotis surname during these years.

	2000	2010	Change
White	97.13%	95.18%	-2.01%
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%