6,051births recorded
5Countries
2Variants
2000Peak · Alberta
#2822United States 2025
Reilly is a girl name family recorded 6,051 times in 5 countries since 1978. It ranks highest today in the United States (#2822 in 2025). Its all-time peak was in Alberta in 2000, at 17.9 births per 100,000.
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
Which form wins where
Births per 100,000 newborns for each form, in the selected country.
All forms of Reilly
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Reilly | English | 5,528 | 🇺🇸 United States | #2822 | 1998 | ▼ 26 % |
| Reilly | English | 137 | 🇨🇦 Ontario | – | 1997 | – |
| Reilly | English | 10 | 🏴 England & Wales | – | 2020 | – |
| Reilly | English | 5 | 🇨🇦 Alberta | – | 2000 | – |
| Reilly | English | 5 | 🇨🇦 British Columbia | – | 2001 | – |
| Reily | English | 366 | 🇺🇸 United States | #14942 | 2006 | new |
How we grouped these names
- Reilly ↔ Reily — spelling variant
Questions about Reilly
How popular is the name Reilly?
In 2025 it ranked #2822 in the United States. Official registers record 6,051 births across 5 countries.
What is Reilly in other languages?
Reily (English).
When was Reilly most popular?
It peaked in Alberta in 2000, at 17.9 births per 100,000.
Is Reilly a boy or a girl name?
In official birth registers, Reilly is a girl name.