Kilroy — Last Name Origin & Meaning

European origin Rank #12,953 in the US 2,371 Americans

US Rank (2010)
#12,953
▼ Down 516 since 2000
People in the US
2,371
0.8 per 100K people
Origin
European
European

Origin & Meaning of the Kilroy Surname

What does the last name Kilroy mean?

The surname Kilroy carries the meaning "Family name of European origin." It is derived from the European language and has been passed down through generations, reflecting the occupations, locations, or characteristics of early bearers of the name. With 2,371 bearers in the 2010 US Census, Kilroy ranks as the #12,953 most common surname in the United States.

Where does the surname Kilroy come from?

The Kilroy surname has its roots in European heritage. Names of European origin often reflect the cultural, linguistic, and historical traditions of the communities where they first appeared. Over centuries, migration and cultural exchange have spread the Kilroy name far beyond its original homeland.

Language of Origin

The linguistic roots of Kilroy trace back to European. Understanding the original language helps decode the meaning and evolution of the name from its earliest recorded forms to the modern spelling used today.

European European

Quick Facts

Surname Kilroy
Meaning Family name of European origin
Origin European
Language European
US Rank (2010) #12,953
US Count (2010) 2,371
Per 100K People 0.8
First Letter K

Ethnic Distribution of Kilroy

According to the US Census, the Kilroy surname is distributed across the following ethnic groups. This data reflects self-reported ethnicity among 2,371 Americans with the Kilroy last name.

White 95.36%
Hispanic 2.19%
Asian/PI 0.76%
Two+ Races 1.39%
Ethnic distribution of the Kilroy surname in the US (2010 Census)
Ethnicity Percentage
White95.36%
Hispanic2.19%
Asian/Pacific Islander0.76%
Two or More Races1.39%

Popularity of Kilroy Over Time

Comparing US Census data from 2000 and 2010 shows how the Kilroy surname has changed in prevalence.

Census 2000
#12,437
2,289 people
Down 516
Census 2010
#12,953
2,371 people

The number of Americans with the Kilroy surname increased by 82 between 2000 and 2010.

Discover Your Kilroy Ancestry

Uncover your family's history with a DNA test. Learn where your Kilroy ancestors came from and connect with relatives worldwide.

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Similar Surnames to Kilroy

These surnames share similar popularity, spelling, or cultural background with Kilroy.

Other European Surnames

Explore more surnames with European roots. There are 162,254 surnames in our database — here are some that share the same European origin as Kilroy.

Frequently Asked Questions About Kilroy

The surname Kilroy is of European origin. Family name of European origin
The surname Kilroy is ranked #12,953 in the United States with approximately 2,371 people bearing this name as of the 2010 US Census.
Family name of European origin. The name has European roots and has been present in the United States for generations.
According to US Census data, the Kilroy surname is distributed as: 95.4% White. This reflects the diverse heritage of Americans with this name.
To trace your Kilroy ancestry, consider using DNA testing services like Ancestry.com, 23andMe, or MyHeritage. These services can connect you with relatives and reveal your ethnic heritage and migration patterns.

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