Theo

boys’ nameAt its peakCompare

Theo is ranked 80th among boys in 2024 (4,110 births). Its best rank was 78th, in 2023.

Rank in 2024: #80down 2 from 2023
Births in 2024: 4,1100.24% of boys
Peak year: 20234,137 births
Best rank: #78in 2023
Since 1880: 35,340people given the name

Babies named Theo, by year of birthboys

The story in the numbers

31,858 boys have been named Theo in the United States since 1880, according to Social Security records. The busiest single year was 2023, with 4,137 births — 0.24% of all boys recorded that year.

It has never been more used than now: its record year is 2023, within the last few years of data.

Half of everyone given the name was born by 2020, and the 2020s alone account for 53%. It has spent 77 of 145 years in the top 1,000, 3 of them in the top 100.

It is overwhelmingly a boy’s name: 3,482 girls have also been given it, 9.9% of the total.

Rank among boys, year by year

Higher on the chart = more popularrank (gaps = outside the top 1,000)

By decade

Decade	boys named Theo
1880s	93
1890s	118
1900s	226
1910s	714
1920s	980
1930s	680
1940s	440
1950s	371
1960s	322
1970s	386
1980s	540
1990s	600
2000s	1,386
2010s	8,188
2020s	16,814

In 2023, its biggest year

Theo was the 78th most given boy’s name that year. The top five boys’ names of 2023 were Liam, Noah, Oliver, James and Elijah. See all of 2023.

Names that rose and fell with Theo

Same sex, most similar popularity curve over 145 years, in five-year steps — the shape of the line, not the size.

Other spellings in the data

Teo2,668 ever

What this page does not tell you. The Social Security data records how many babies were given a name, not what the name means or where it comes from — so neither do we. Counts cover people with a Social Security number; names given to fewer than five babies in a year are withheld. More on the data.