Theo vs Theodore

Side-by-side comparison of Theo and Theodore — 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

Theodore

Boy name · Rank #4

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Which name is more popular?

Metric Theo Theodore
Current Rank #80 #4
Total Births (all years) 31,858 303,761
Peak Year 2023 2024
Peak Year Births 4,137 12,011
Peak Decade 2020ss 2020ss
Gender Boy Boy
First Recorded Year 1880 1880

Births by Decade

Decade Theo Theodore
1880ss 93 2,176
1890ss 118 2,300
1900ss 226 6,490
1910ss 714 21,106
1920ss 980 31,287
1930ss 680 24,957
1940ss 440 26,248
1950ss 371 29,049
1960ss 322 21,286
1970ss 386 13,570
1980ss 540 11,959
1990ss 600 10,109
2000ss 1,386 10,556
2010ss 8,188 40,525
2020ss 16,814 52,143

Recent Annual Births (2014–present)

Year Theo Theodore
2014 550 3,228
2015 765 4,155
2016 952 4,910
2017 1,232 5,970
2018 1,554 7,088
2019 2,018 7,894
2020 2,225 8,637
2021 2,703 9,597
2022 3,639 10,814
2023 4,137 11,084
2024 4,110 12,011

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, 1880–2024.

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