Explore the Family Name Isadore

The meaning of Isadore

1. Probably an Americanized form of French Isidore and Spanish Isidoro. 2. African American: from the personal name Isadore, an altered form of French or English Isidore.

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

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

Based on the Decennial U.S. Census data, the surname Isadore has seen a slight decrease in popularity. In 2000, the surname ranked 43,157 and it fell to 45,253 in 2010, marking a decrease of 4.86%. However, this did not significantly affect the count of individuals with the surname, which saw a marginal increase from 472 in 2000 to 473 in 2010 - an increment of just 0.21%. The proportion of individuals bearing the surname per 100,000 also decreased by 5.88%, dropping from 0.17 in 2000 to 0.16 in 2010.

	2000	2010	Change
Rank	#43,157	#45,253	-4.86%
Count	472	473	0.21%
Proportion per 100k	0.17	0.16	-5.88%

Race and Ethnicity of people with the last name Isadore

On the other hand, the ethnic identity associated with the surname Isadore has shown some interesting changes between 2000 and 2010, according to the Decennial U.S. Census. The percentage of people with the surname identifying as White dropped by 4.58% from 43.43% to 41.44%, while those identifying as Black also decreased from 49.58% to 47.57% - a dip of 4.05%. Meanwhile, the census reported a significant rise in the number of people with the surname who identify with two or more races - a whopping 119.81% increase from 1.06% to 2.33%. Furthermore, there was a notable increase in those identifying as American Indian and Alaskan Native from 5.08% in 2000 to 6.55% in 2010, a 28.94% increase. No data was reported for Asian/Pacific Islander and Hispanic ethnicities for either year.

	2000	2010	Change
Black	49.58%	47.57%	-4.05%
White	43.43%	41.44%	-4.58%
American Indian and Alaskan Native	5.08%	6.55%	28.94%
Two or More Races	1.06%	2.33%	119.81%
Asian/Pacific Islander	0%	0%	0%
Hispanic	0%	0%	0%