Theodor vs Theo

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

Name A

Theodor

Boy name · Rank #2101

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Name B

Theo

Boy name · Rank #80

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Which name is more popular?

Metric Theodor Theo
Current Rank #2101 #80
Total Births (all years) 2,216 35,830
Peak Year 2022 2023
Peak Year Births 88 4,140
Peak Decade 2010s 2020s
Gender Boy Boy
First Recorded Year 1884 1880

Births by Decade

Decade Theodor Theo
1880s 10 93
1890s 6 118
1900s - 226
1910s 110 714
1920s 139 980
1930s 120 680
1940s 113 440
1950s 139 371
1960s 124 323
1970s 79 386
1980s 98 540
1990s 127 600
2000s 189 1,386
2010s 492 8,189
2020s 470 20,784

Recent Annual Births (2014–present)

Year Theodor Theo
2014 56 550
2015 54 765
2016 62 952
2017 54 1,232
2018 65 1,554
2019 85 2,018
2020 79 2,225
2021 70 2,703
2022 88 3,642
2023 86 4,140
2024 71 4,129
2025 76 3,945

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, 1884–2025.

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