Reilly Boy & girl
How popular is Reilly?
#2,822 girl name in 2025
60 baby girls were named Reilly in the US in 2025, making it the 2822nd most popular girl name. Another 48 boys got the name (#2,676 for boys).
Reilly popularity over time
Boys Girls
| Rank in 2025 | #2,822 for girls (▼ 128 from 2024) |
|---|---|
| Babies in 2025 | 60 girls, 48 boys |
| 10-year trend | Falling (-33% babies vs 2015) |
| Earlier ranks | #2,123 in 2015, #2,216 in 2020 |
| Peak year | 1998 (379 girls) |
| Highest rank | #622 in 1997 |
| First recorded | 1978 |
| Boys vs girls (last 10 years) | 46% boys, 54% girls |
| Chance a classmate shares it | 0.1% in a class of 25 kids born in 2025 |
Reilly counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Reilly family of names ranked #2,039 for girls in 2025 (#1,988 the year before), with 65 babies in all.
| Spelling | Girls in 2025 | Share |
|---|---|---|
| Reilly | 60 | 92% |
| Reily | 5 | 8% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Reilly is most popular
Babies named Reilly per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
- New York: 0.1 per 1,000 (36 girls)
- Massachusetts: 0.1 per 1,000 (8 girls)
- Illinois: 0.1 per 1,000 (14 girls)
- Pennsylvania: 0.0 per 1,000 (11 girls)
- New Jersey: 0.0 per 1,000 (6 girls)
Reilly by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1970s | 6 | #8,560 |
| 1980s | 108 | #4,352 |
| 1990s | 1,596 | #622 |
| 2000s | 2,437 | #737 |
| 2010s | 996 | #1,564 |
| 2020s | 385 | #2,216 |
Girl names about as popular as Reilly
Questions
- Is Reilly a boy or girl name?
- Reilly is used for both. Over the last 10 years, 46% of babies named Reilly were boys and 54% were girls.
- How popular is the name Reilly?
- 60 baby girls were named Reilly in the US in 2025, making it the 2822nd most popular girl name. Another 48 boys got the name (#2,676 for boys).
- When was Reilly most popular?
- Reilly peaked in 1998, when 379 girls were given the name. Its highest rank was #622 in 1997.
- How many people are named Reilly?
- 10,088 babies have been named Reilly in the US since 1880. We estimate about 9,949 of them are alive in 2026, with a median age of 22.
- Where is Reilly most popular?
- From 2021 to 2025, Reilly was most common in New York, at 0.1 of every 1,000 girls born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.