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How Many People Are Named Theo?
Estimated people named Theo living in the U.S. today
29,287
Gender distribution
97% male · 3% female in SSA records.
Name scorecard
- Total U.S. births recorded (1880–2024): 35,340
- Peak year: 2023 (4,179 births)
- Estimated living today: 29,287
Theo by age group — who carries the name today?
Theo popularity over time (1880–2024)
Estimated living bearers by birth decade
About the name Theo
Theo has been recorded by the Social Security Administration since the 19th century dataset began. In total, 35,340 babies were given the name in the United States between 1880 and 2024. After adjusting each birth cohort for survival to today, an estimated 29,287 bearers are still living — roughly 1 in 11,671 Americans. The name's strongest decade shapes how old most Theos you meet will be, which the age-group breakdown above shows directly. All figures are statistical estimates from public records; see our methodology for sources, the survival model, and the limits of the data (names given to fewer than five babies in a year are not published by the SSA).
Frequently asked questions
How many people are named Theo in the US?
An estimated 29,287 people named Theo are living in the United States today, based on SSA birth records from 1880 to 2024 adjusted for survival. That makes Theo rare — about 1 in 11,671 Americans.
Is Theo a boy or girl name?
In SSA records, Theo is 97% male and 3% female, so it is predominantly a male name.
When was Theo most popular?
Theo peaked in 2023, when 4,179 babies were given the name. Its current trend is rising compared with the previous decade.
How rare is the name Theo?
Theo ranks #1,271 of 104,819 first names recorded by the SSA, with a rarity score of 48 out of 100 (higher means rarer).