How Common Is the Surname Kilby?
The surname Kilby is the #7,534 most common last name in the United States, with an estimated 5,038 bearers. That's about 1 in 66,672 Americans. This data comes from the 2010 U.S. Census Bureau surname frequency tables.
This page covers the Kilby 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 Kilby.
Estimated Americans with this Surname
5,038
About 1 in 66,672 people in the U.S.
Census Rank
#7,534
Frequency Rate
1.50
per 100,000 people
Census Count
4,412
2010 Census
Data Source
2010
U.S. Census Bureau
Ancestry and Ethnicity for Kilby
The Kilby surname is most commonly associated with people who identify as White (89.55%). The next largest groups are Black (5.98%) and Hispanic (2.27%).
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 ... Kilby?
Pair the Kilby surname with a first name to estimate how many people share that full name in the United States.
Kilby Surname: Questions and Answers
How common is the last name Kilby?
Kilby is the #7,534 most common surname in the United States, with an estimated 5,038 people sharing this last name. It appears at a rate of 1.50 per 100,000 Americans.
What ethnicity is the surname Kilby?
The Kilby surname is most commonly associated with people who identify as White (89.55%). The next largest groups are Black (5.98%) and Hispanic (2.27%). 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] Kilby are there?
We can estimate any first + last name combination. Popular examples: Michael Kilby, James Kilby, John Kilby. 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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