How rare is the name Reilly?

9,187 people in the United States have the first name Reilly, about 1 in 32,876. It ranks #2,605 of 53,615 first names in the 2020 Census.

first name

REILLY

#2,605

of 53,615 first names recorded in the 2020 Census

People
9,187
About
1 in 32,876
This common or more
80.3%
Who bears it

Of the 9,187 people named Reilly, 85.9% reported their origin as White, 5.8% as Hispanic or Latino and 5% as two or more races. 55.7% are female. These count how people described themselves on the 2020 Census, not where the name comes from.

Reilly peaked in 1997, when 543 babies got the name.

Births per year, SSA records 1880–2025
19532025
Peak year
1997
Births that year
543
In 2025*
108 ▼80%
Recorded as
used for both

At least 10,088 babies have been given the name since 1953. Years SSA withheld, because fewer than 5 were born, are skipped rather than drawn as zero. * 2025 is the newest year published and it undercounts: a card application is filed some time after a birth.

Reilly by decade

Among all names given to American babies, its best decade was the 2000s, when it ranked #1,188. The largest share of babies named Reilly, 67.1%, were born between 1997 and 2012, as Generation Z.

1950s#12,03613
1970s#15,98724
1980s#4,682314
1990s#1,4252,628
2000s#1,1884,353
2010s#2,1652,055
2020s#3,204701
Baby boom 1946–640.1%
Generation X 1965–800.4%
Millennials 1981–9613.4%
Generation Z 1997–1267.1%
2013 and later19%

Rank counts both sexes together, among every name SSA recorded that decade; the number under it is births. The 2020s run only to 2025. Generation years follow Pew Research Center, which has not named a generation after 2012.

Where Reilly is most common

Compared with all babies born in each state since 1910, Reilly has been most common in Washington (2.2×), New Jersey (2×), and Pennsylvania (1.8×), and least common in Tennessee (0.37×).

6,234 births recorded by state, 1910–2025. 2× means twice as common as nationally. States with fewer than 30 such births are left blank, and SSA withholds any year with fewer than 5 in a state, so small states read low.

Either side of Reilly

#2,603 Aditya · 9,207#2,604 Sun · 9,188#2,606 Kimber · 9,179#2,607 Katerina · 9,171

Spelled almost the same

4 first names in the 2020 Census spelled within a letter or two of Reilly, most common first.

#12,946 Reiley · 945#13,095 Reily · 932#27,069 Reilley · 340#51,177 Relly · 115

Also a last name

As a last name, Reilly ranks #853 of 156,621, with 39,645 people. See Reilly as a last name

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