Theo vs Theadore

Side-by-side comparison of Theo and Theadore - popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Theo

Boy name · Rank #80

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Name B

Theadore

Boy name · Rank #9912

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Which name is more popular?

Metric Theo Theadore
Current Rank #80 #9912
Total Births (all years) 35,830 4,005
Peak Year 2023 1927
Peak Year Births 4,140 91
Peak Decade 2020s 1920s
Gender Boy Boy
First Recorded Year 1880 1880

Births by Decade

Decade Theo Theadore
1880s 93 47
1890s 118 38
1900s 226 137
1910s 714 428
1920s 980 770
1930s 680 703
1940s 440 592
1950s 371 536
1960s 323 323
1970s 386 175
1980s 540 110
1990s 600 50
2000s 1,386 28
2010s 8,189 32
2020s 20,784 36

Recent Annual Births (2014–present)

Year Theo Theadore
2014 550 -
2015 765 8
2016 952 -
2017 1,232 8
2018 1,554 5
2019 2,018 5
2020 2,225 5
2021 2,703 8
2022 3,642 6
2023 4,140 5
2024 4,129 7
2025 3,945 5

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 1880–2025.

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