How Common Is the Surname Irby?
The surname Irby is the #3,138 most common last name in the United States, with an estimated 13,100 bearers. That's about 1 in 25,641 Americans. This data comes from the 2010 U.S. Census Bureau surname frequency tables.
This page covers the Irby 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 Irby.
Estimated Americans with this Surname
13,100
About 1 in 25,641 people in the U.S.
Census Rank
#3,138
Frequency Rate
3.90
per 100,000 people
Census Count
11,506
2010 Census
Data Source
2010
U.S. Census Bureau
Ancestry and Ethnicity for Irby
The Irby surname is most commonly associated with people who identify as White (50.96%). The next largest groups are Black (44.19%) and Two or More Races (2.12%).
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 ... Irby?
Pair the Irby surname with a first name to estimate how many people share that full name in the United States.
Irby Surname: Questions and Answers
How common is the last name Irby?
Irby is the #3,138 most common surname in the United States, with an estimated 13,100 people sharing this last name. It appears at a rate of 3.90 per 100,000 Americans.
What ethnicity is the surname Irby?
The Irby surname is most commonly associated with people who identify as White (50.96%). The next largest groups are Black (44.19%) and Two or More Races (2.12%). 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] Irby are there?
We can estimate any first + last name combination. Popular examples: Michael Irby, James Irby, John Irby. 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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