Rex
boy name#859 in 2025Rex entered the US charts in 1880, peaked at #170 in 1951, ranks #859 today — a name gently stepping back from its peak.
Popularity 1880–2025
#859
rank today
#170
peak (1951)
281
babies in 2025
falling
a name gently stepping back from its peak
Rank by decade
| Decade | Average rank |
|---|---|
| 1880s | #451 |
| 1890s | #329 |
| 1900s | #291 |
| 1910s | #251 |
| 1920s | #232 |
| 1930s | #208 |
| 1940s | #232 |
| 1950s | #193 |
| 1960s | #270 |
| 1970s | #448 |
| 1980s | #559 |
| 1990s | #833 |
| 2000s | #928 |
| 2010s | #644 |
| 2020s | #740 |
Strongest states
Over the last decade, Rex has been most popular in CA, TX, FL.
Living bearers
About 36,500 people named Rex are estimated to be alive in the US today.
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 ranks #859 among US boy names in 2025, with 281 babies given the name.
- When was the name Rex most popular?
- Rex peaked in 1951, reaching #170 among US boy names.
- Will my child share the name Rex with classmates?
- Rex will almost certainly be the only one in school.
Torn between Rex and another name?
Put them head to head — full stats, history and a verdict.
Start a name battle