Theory
Rank in 2025
#5917
recorded as girls
Up 1,015 since 2024
#7679
recorded as boys
Up 2,215 since 2024
Babies in 2025
30
girls 20 · boys 10
Peak year
2023
20 babies recorded as girls
All-time total
257
since 2006
Born a Theory? See how many share your birth year.
Any year from 1880 to 2025.
Babies per 1,000 (same sex), 1880–2025
Recorded as girls
Recorded as boys
Theory was most popular in 2023, when 20 babies recorded as girls got the name (0.01 per 1,000). In 2025, 20 babies were named Theory, ranking #5917 for babies recorded as girls. Compared with 2018–2020, it's up 124%.
Show every year
| Year | Girls | Rank | Boys | Rank |
|---|---|---|---|---|
| 2025 | 20 | 5917 | 10 | 7679 |
| 2024 | 16 | 6932 | 7 | 9894 |
| 2023 | 20 | 5960 | 8 | 8921 |
| 2022 | 18 | 6464 | 15 | 5874 |
| 2021 | 18 | 6414 | 12 | 6698 |
| 2020 | 8 | 11090 | 6 | 10605 |
| 2019 | 8 | 11356 | <5 | — |
| 2018 | 7 | 12464 | 8 | 8819 |
| 2017 | 5 | 15902 | <5 | — |
| 2016 | 8 | 11781 | 8 | 8816 |
| 2015 | 7 | 13006 | 7 | 9568 |
| 2014 | 8 | 11931 | <5 | — |
| 2013 | 9 | 11000 | <5 | — |
| 2012 | 8 | 12199 | <5 | — |
| 2011 | <5 | — | <5 | — |
| 2010 | <5 | — | 5 | 12231 |
| 2009 | <5 | — | 6 | 10994 |
| 2008 | <5 | — | <5 | — |
| 2007 | <5 | — | <5 | — |
| 2006 | 5 | 17168 | <5 | — |
Free printables
Names like Theory
Names whose popularity rose and fell over the same years.
Recorded as girls 64% · boys 36% across all years