Theory Name Popularity and Statistics
Theory is used for both girls and boys. The statistics below show this exact spelling in official U.S. records.
Meaning, origin, and pronunciation details are shown only after they have been independently reviewed.
How Do You Spell Theory?
Theory is spelled T-H-E-O-R-Y. The name has 6 letters.
Theory Popularity in 2025
Rank#5,917
Recorded Births20
Rank#7,679
Recorded Births10
- Girls usage rose 1,015 places to #5,917 and recorded 4 more births compared with 2024.
- Boys usage rose 2,215 places to #7,679 and recorded 3 more births compared with 2024.
Figures reflect this exact spelling in the latest available U.S. Social Security Administration records. See the complete year-by-year trend.
Theory Popularity by Year
The table below shows the most recent available records for this exact spelling from 2010 through 2025. Use the full history page to explore every recorded year.
| Year | Usage Category | Recorded Births | National Rank |
|---|---|---|---|
| 2025 | Girls | 20 | #5,917 |
| 2025 | Boys | 10 | #7,679 |
| 2024 | Girls | 16 | #6,932 |
| 2024 | Boys | 7 | #9,894 |
| 2023 | Girls | 20 | #5,960 |
| 2023 | Boys | 8 | #8,921 |
| 2022 | Girls | 18 | #6,464 |
| 2022 | Boys | 15 | #5,874 |
| 2021 | Girls | 18 | #6,414 |
| 2021 | Boys | 12 | #6,698 |
| 2020 | Girls | 8 | #11,090 |
| 2020 | Boys | 6 | #10,605 |
| 2019 | Girls | 8 | #11,356 |
| 2018 | Girls | 7 | #12,464 |
| 2018 | Boys | 8 | #8,819 |
| 2017 | Girls | 5 | #15,902 |
| 2016 | Girls | 8 | #11,781 |
| 2016 | Boys | 8 | #8,816 |
| 2015 | Girls | 7 | #13,006 |
| 2015 | Boys | 7 | #9,568 |
| 2014 | Girls | 8 | #11,931 |
| 2013 | Girls | 9 | #11,000 |
| 2012 | Girls | 8 | #12,199 |
| 2010 | Boys | 5 | #12,231 |
When Was Theory Most Popular?
Peak years are based on the highest recorded birth totals for this exact spelling and usage category. They are ordered by birth count, not chronologically.
2025 · Girls
20 recorded births
National rank #5,917
2023 · Girls
20 recorded births
National rank #5,960
2022 · Girls
18 recorded births
National rank #6,464
2021 · Girls
18 recorded births
National rank #6,414