Theory
girl name#5917 in 2025Theory entered the US charts in 2006, peaked at #5917 in 2025, ranks #5917 today — a rare gem few children share.
Popularity 2006–2025
#5917
rank today
#5917
peak (2025)
20
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 2000s | #17168 |
| 2010s | #12455 |
| 2020s | #7130 |
Living bearers
About 200 people named Theory are estimated to be alive in the US today.
The typical Theory is a kid of about 4 — this name's wave is very recent.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Theory in 2025?
- Theory ranks #5917 among US girl names in 2025, with 20 babies given the name.
- When was the name Theory most popular?
- Theory peaked in 2025, reaching #5917 among US girl names.
- Will my child share the name Theory with classmates?
- Theory will almost certainly be the only one in school.
Torn between Theory and another name?
Put them head to head — full stats, history and a verdict.
Start a name battle