Names like Theo

In 2025, 3,945 boys born in the US were named Theo, #82 among boys' names.

It was in the top 1,000 as early as 1880, dropped out, and has been back every year since 2010.

Its best rank was #78, in 2023.

The most births in one year were 4,140, in 2023.

Births rose 416% from 765 in 2015.

For 9 of the 12 names below, the current unbroken run in the top 1,000 began in 2005 or later (Theo's began in 2010).

Theo's rank every ten years

1. 1880
   #629
2. 1890
   #564
3. 1900
   #652
4. 1910
   #459
5. 1920
   #624
6. 1930
   #633
7. 1940
   #997
8. 1950
   —
9. 1960
   —
10. 1970
    —
11. 1980
    —
12. 1990
    —
13. 2000
    —
14. 2010
    #911
15. 2020
    #172
16. 2025
    #82

— outside the top 1,000

12 boy names with a similar curve

How this list was made

We compared Theo's rank in every year from 1880 to 2025 with every other boy's name in the 2025 top 1,000 (US Social Security birth records); the closest curves come first. Years outside the top 1,000 count the same however far outside, years since 1995 count four times as much, and each name appears in one spelling.