Explore the Family Name Thermidor

The meaning of Thermidor

Haitian: nickname or ornamental name from French Thermidor, the name of the eleventh month in the French Republican Calendar, derived from the Greek word thermos ‘heat’.

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

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

Based on the Decennial U.S. Census data, the popularity of the surname Thermidor has significantly increased in the United States between 2000 and 2010. In 2000, it was ranked 89,895th and rose to 55,255th by 2010, marking a dramatic increase of 38.53%. The count of people with this surname also climbed from 191 in 2000 to 372 in 2010, a growth rate of 94.76%. The proportion of individuals with the Thermidor surname per 100,000 population doubled from 0.07 in 2000 to 0.13 in 2010, indicating an increase of 85.71%.

20002010Change
Rank#89,895#55,25538.53%
Count19137294.76%
Proportion per 100k0.070.1385.71%

Race and Ethnicity of people with the last name Thermidor

As per the ethnicity data from the Decennial U.S. Census, the majority of individuals with the surname Thermidor identified as Black, seeing an increase from 86.91% in 2000 to 94.09% in 2010. There were no individuals who claimed Asian/Pacific Islander, White, or American Indian and Alaskan Native ethnic identities during both census years. Individuals identifying with two or more races dropped from 9.42% in 2000 to 3.76% in 2010, a decrease of over 60%. The Hispanic population having this surname also decreased from 3.14% in 2000 to 1.61% in 2010, showing a reduction of 48.73%.

20002010Change
Black86.91%94.09%8.26%
Two or More Races9.42%3.76%-60.08%
Hispanic3.14%1.61%-48.73%
Asian/Pacific Islander0%0%0%
White0%0%0%
American Indian and Alaskan Native0%0%0%