Theo
girl name#5722 in 2025Theo entered the US charts in 1880, peaked at #512 in 1887, ranks #5722 today — a rare gem few children share.
Popularity 1880–2025
#5722
rank today
#512
peak (1887)
21
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 1880s | #613 |
| 1890s | #657 |
| 1900s | #665 |
| 1910s | #713 |
| 1920s | #803 |
| 1930s | #1236 |
| 1940s | #1523 |
| 1950s | #2878 |
| 1960s | #4858 |
| 1970s | #7785 |
| 1990s | #13147 |
| 2000s | #15432 |
| 2010s | #9756 |
| 2020s | #3863 |
Strongest states
Over the last decade, Theo has been most popular in CA, KS, PA.
Living bearers
About 900 people named Theo are estimated to be alive in the US today.
The typical Theo alive today was born around 1923, making them about 102 years old.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Theo in 2025?
- Theo ranks #5722 among US girl names in 2025, with 21 babies given the name.
- When was the name Theo most popular?
- Theo peaked in 1887, reaching #512 among US girl names.
- Will my child share the name Theo with classmates?
- Theo will almost certainly be the only one in school.
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