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MyNameRoots

Baby name

Theo

Girl Boy

9% girls / 91% boys

Origin of the name

Theo is a short form of Theodore and other names beginning with the Greek theos, “God.”

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Rising name

20231880190019251950197520002025
In 2023, Theo reached its peak: 4,140 boys, 1 baby in 801. The momentum is recent: births are up 264% over the last five years, compared with the decade before. Latest ranking, 2025: No. 82. 58% of all babies named Theo since 1880 were born in the 2020s.
35,830births since 1880
2020sgeneration
No. 78rank at its peak, in 2023

Where babies named Theo are born

2023

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The darker the blue, the more common Theo is in the state, compared with its births. White: no births published that year.

Where it is most popular

Compared with the national average, Theo is most common in Utah (2.4 times), Nevada (2) and Washington (1.8), taking into account all births in each state since 1910.

One letter apart

Names from the same era

Lionel · Amari · Enzo · Ali · Matteo · Zion

Born in…

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Girls and boys, decade by decade

DecadeGirlsBoys
1880s58%42%
1890s64%36%
1900s57%43%
1910s51%49%
1920s47%53%
1930s35%65%
1940s43%57%
1950s32%68%
1960s17%83%
1970s5%95%
1980s0%100%
1990s1%99%
2000s0%100%
2010s1%99%
2020s1%99%