Rei Boy & girl
How popular is Rei?
#5,237 girl name in 2025
24 baby girls were named Rei in the US in 2025, making it the 5237th most popular girl name. Another 35 boys got the name (#3,313 for boys).
1,020living people named Rei (est.)
9median age of people named Rei
1,028babies named Rei since 1880
1 in 56,192US babies born in 2025
Rei popularity over time
Boys Girls
| Rank in 2025 | #5,237 for girls (▼ 347 from 2024) |
|---|---|
| Babies in 2025 | 24 girls, 35 boys |
| 10-year trend | Rising fast (+85% babies vs 2015) |
| Earlier ranks | #8,443 in 2015, #3,221 in 2020 |
| Peak year | 2020 (48 girls) |
| Highest rank | #3,221 in 2020 |
| First recorded | 1974 |
| Boys vs girls (last 10 years) | 44% boys, 56% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Where Rei is most popular
Babies named Rei per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
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- California: 0.0 per 1,000 (37 girls)
- New York: 0.0 per 1,000 (6 girls)
Rei by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1970s | 5 | #8,773 |
| 1980s | 20 | #9,239 |
| 1990s | 27 | #9,472 |
| 2000s | 101 | #7,575 |
| 2010s | 217 | #3,768 |
| 2020s | 180 | #3,221 |
Girl names about as popular as Rei
Questions
- Is Rei a boy or girl name?
- Rei is used for both. Over the last 10 years, 44% of babies named Rei were boys and 56% were girls.
- How popular is the name Rei?
- 24 baby girls were named Rei in the US in 2025, making it the 5237th most popular girl name. Another 35 boys got the name (#3,313 for boys).
- When was Rei most popular?
- Rei peaked in 2020, when 48 girls were given the name. Its highest rank was #3,221 in 2020.
- How many people are named Rei?
- 1,028 babies have been named Rei in the US since 1880. We estimate about 1,020 of them are alive in 2026, with a median age of 9.
- Where is Rei most popular?
- From 2021 to 2025, Rei was most common in California, at 0.0 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.