Home / Name Directory / Reilly
How Many People Are Named Reilly?
Estimated people named Reilly living in the U.S. today
9,777
Gender distribution
45% male · 55% female in SSA records.
Name scorecard
- Total U.S. births recorded (1880–2024): 9,977
- Peak year: 1997 (543 births)
- Estimated living today: 9,777
Reilly by age group — who carries the name today?
Reilly popularity over time (1880–2024)
Estimated living bearers by birth decade
About the name Reilly
Reilly has been recorded by the Social Security Administration since the 19th century dataset began. In total, 9,977 babies were given the name in the United States between 1880 and 2024. After adjusting each birth cohort for survival to today, an estimated 9,777 bearers are still living — roughly 1 in 34,960 Americans. The name's strongest decade shapes how old most Reillys you meet will be, which the age-group breakdown above shows directly. All figures are statistical estimates from public records; see our methodology for sources, the survival model, and the limits of the data (names given to fewer than five babies in a year are not published by the SSA).
Frequently asked questions
How many people are named Reilly in the US?
An estimated 9,777 people named Reilly are living in the United States today, based on SSA birth records from 1880 to 2024 adjusted for survival. That makes Reilly very rare — about 1 in 34,960 Americans.
Is Reilly a boy or girl name?
In SSA records, Reilly is 45% male and 55% female, so it is predominantly a gender-neutral name.
When was Reilly most popular?
Reilly peaked in 1997, when 543 babies were given the name. Its current trend is declining compared with the previous decade.
How rare is the name Reilly?
Reilly ranks #2,444 of 104,819 first names recorded by the SSA, with a rarity score of 53 out of 100 (higher means rarer).