Explore the Family Name Cayo

The meaning of Cayo

1. Altered form of Caya, a surname of French origin. Compare Chio and Kio. 2. Spanish: from the personal name Cayo, from Latin Caius, Gaius. 3. Haitian: either of French (compare Cayot) or Spanish origin (see 2 above). Some characteristic forenames: French Gabrielle, Michel, Pierre, Raoul.

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

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

Based on the Decennial U.S. Census data, the surname Cayo has seen an increase in popularity from 2000 to 2010. In 2000, it was ranked 36,672nd most popular surname and by 2010, it climbed up to 29,918th place, indicating an 18.42% rise in rank. Similarly, the count of individuals with the Cayo surname grew by 36.52%, from 575 in 2000 to 785 in 2010. Consequently, the proportion of the Cayo surname per 100k people also increased by 28.57%, shifting from 0.21 to 0.27.

20002010Change
Rank#36,672#29,91818.42%
Count57578536.52%
Proportion per 100k0.210.2728.57%

Race and Ethnicity of people with the last name Cayo

In terms of ethnicity, the Decennial U.S. Census data reveals a diverse distribution among individuals carrying the Cayo surname. As of 2010, the largest ethnic group among those with this surname were Blacks, accounting for 34.90%, which shows a 19.44% increase from 2000. The second-largest group was Whites at 43.06%, although this was a decrease of 19.09% from the previous decade. Hispanics represented 19.36% of the Cayos, marking a 27.96% increase from 2000. Those identifying as two or more races constituted 1.40% of the individuals with this surname, down by 19.54% since 2000. There were no recorded Asian/Pacific Islanders or American Indians and Alaskan Natives with the surname Cayo in either census year.

20002010Change
White53.22%43.06%-19.09%
Black29.22%34.9%19.44%
Hispanic15.13%19.36%27.96%
Two or More Races1.74%1.4%-19.54%
Asian/Pacific Islander0%0%0%
American Indian and Alaskan Native0%0%0%