How Common Is the Surname Isaac?
The surname Isaac is the #1,898 most common last name in the United States, with an estimated 21,531 bearers. That's about 1 in 15,600 Americans. This data comes from the 2010 U.S. Census Bureau surname frequency tables.
This page covers the Isaac surname's frequency in the U.S. population, its rank among all American surnames, and a breakdown of ancestry and ethnicity data from the Census. You can also check how many people share any first + last name combination involving Isaac.
Estimated Americans with this Surname
21,531
About 1 in 15,600 people in the U.S.
Census Rank
#1,898
Frequency Rate
6.41
per 100,000 people
Census Count
18,903
2010 Census
Data Source
2010
U.S. Census Bureau
Ancestry and Ethnicity for Isaac
The Isaac surname is most commonly associated with people who identify as White (40.46%). The next largest groups are Black (40.09%) and Hispanic (9.53%).
Self-reported race and ethnicity from the 2010 U.S. Census Bureau surname tables. Some categories may be suppressed for privacy when sample sizes are small.
How Many People Are Named ... Isaac?
Pair the Isaac surname with a first name to estimate how many people share that full name in the United States.
Isaac Surname: Questions and Answers
How common is the last name Isaac?
Isaac is the #1,898 most common surname in the United States, with an estimated 21,531 people sharing this last name. It appears at a rate of 6.41 per 100,000 Americans.
What ethnicity is the surname Isaac?
The Isaac surname is most commonly associated with people who identify as White (40.46%). The next largest groups are Black (40.09%) and Hispanic (9.53%). This data comes from the 2010 U.S. Census Bureau surname tables, which include self-reported race and ethnicity breakdowns.
How many people named [First Name] Isaac are there?
We can estimate any first + last name combination. Popular examples: Michael Isaac, James Isaac, John Isaac. Search any combination on our homepage.
Where does this surname data come from?
Surname frequency data comes from the 2010 U.S. Census Bureau decennial surname tables. These list every surname appearing in the Census along with frequency rates and demographic breakdowns. Full methodology.
Search for a full name combination
How Many of Me