Rex
girl nameRex entered the US charts in 1921, peaked at #3362 in 1925, is rarely given today — a rare gem few children share.
Popularity 1921–2025
—
rank today
#3362
peak (1925)
0
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 1920s | #4256 |
| 1930s | #3822 |
| 1940s | #4237 |
| 1950s | #5183 |
| 1960s | #5136 |
| 1970s | #8061 |
| 1980s | #9768 |
Living bearers
Fewer than a hundred people named Rex are estimated to be alive in the US today — a true one-of-a-kind name.
The typical Rex alive today was born around 1954, making them about 71 years old.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Rex in 2025?
- Rex is rarely given in the US today — it does not rank in the top 2000 girl names.
- When was the name Rex most popular?
- Rex peaked in 1925, reaching #3362 among US girl names.
- Will my child share the name Rex with classmates?
- Rex will almost certainly be the only one in school.
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