How Common Is the Surname Costello?
The surname Costello is the #1,093 most common last name in the United States, with an estimated 36,478 bearers. That's about 1 in 9,208 Americans. This data comes from the 2010 U.S. Census Bureau surname frequency tables.
This page covers the Costello 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 Costello.
Estimated Americans with this Surname
36,478
About 1 in 9,208 people in the U.S.
Census Rank
#1,093
Frequency Rate
10.86
per 100,000 people
Census Count
32,043
2010 Census
Data Source
2010
U.S. Census Bureau
Ancestry and Ethnicity for Costello
The Costello surname is most commonly associated with people who identify as White (90.85%). The next largest groups are Hispanic (5.46%) and Black (1.34%).
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 ... Costello?
Pair the Costello surname with a first name to estimate how many people share that full name in the United States.
Costello Surname: Questions and Answers
How common is the last name Costello?
Costello is the #1,093 most common surname in the United States, with an estimated 36,478 people sharing this last name. It appears at a rate of 10.86 per 100,000 Americans.
What ethnicity is the surname Costello?
The Costello surname is most commonly associated with people who identify as White (90.85%). The next largest groups are Hispanic (5.46%) and Black (1.34%). 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] Costello are there?
We can estimate any first + last name combination. Popular examples: Michael Costello, James Costello, John Costello. 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
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