Theodor
Theodor was the 2004th most popular name for boys in 2025, given to 76 babies. Its best year was 1887, when it ranked 1055th; the most babies were born in 2022 (88). Over the last ten years it has moved up 404 places. More babies were named Theodor in the 2010s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #2,004 boys, down 112 places since 2020
- Babies in 2025
- 76boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 202288 babies
- Total since 1880
- 2,216babies recorded
Theodor popularity since 1880
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #2,004 | 76 |
| 2020 | #1,892 | 79 |
| 2010 | #3,982 | 26 |
| 2000 | #4,188 | 19 |
| 1990 | #4,643 | 12 |
| 1980 | #3,821 | 11 |
| 1970 | #2,876 | 12 |
| 1960 | #2,199 | 15 |
| 1950 | #2,427 | 11 |
| 1940 | #2,308 | 11 |
| 1930 | #2,282 | 13 |
| 1920 | #2,745 | 11 |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Theodor, counting every spelling?
Theodor has no other common spelling that sounds the same.
How many kids will share the name Theodor?
76 of the 3,606,400 babies born in the US in 2025 were named Theodor (0.02 per 1,000 births). For a boy named Theodor born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 110 (of 430 pupils) would have a child named Theodor.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Theodor?
About 1,700 people born in the US named Theodor are alive today, with a median age of 13; half are between 6 and 36. That makes Theodor mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Theodor by state
How common Theodor was among boys born in each state in 2021–2025. In 39 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Theodor: their share of US boys followed the most similar curve since 1880. If you like Theodor, they share its era and feel.
Questions about the name Theodor
How popular is the name Theodor?
Theodor was the 2004th most popular name for boys in 2025, given to 76 babies. Its best year was 1887, when it ranked 1055th; the most babies were born in 2022 (88). Over the last ten years it has moved up 404 places. More babies were named Theodor in the 2010s than in any other decade.
Is Theodor a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Theodor in the US.
Where is Theodor most popular?
In 2021–2025, Theodor was most common in New York (0.07 per 1,000 boys), followed by Washington and Minnesota.