Theodor Boy
How popular is Theodor?
#1,992 boy name in 2025
76 baby boys were named Theodor in the US in 2025, making it the 1992nd most popular boy name.
Theodor popularity over time
| Rank in 2025 | #1,992 for boys (▲ 106 from 2024) |
|---|---|
| Babies in 2025 | 76 boys |
| 10-year trend | Rising (+41% babies vs 2015) |
| Earlier ranks | #2,385 in 2015, #1,872 in 2020 |
| Peak year | 2022 (88 boys) |
| Highest rank | #921 in 1887 |
| First recorded | 1884 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.1% in a class of 25 kids born in 2025 |
Theodor counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Theodore family of names ranked #6 for boys in 2025 (#7 the year before), with 13,431 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Theodore | 13,355 | 99% |
| Theodor | 76 | 1% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Theodor is most popular
Babies named Theodor per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- New York: 0.1 per 1,000 (28 boys)
- Washington: 0.1 per 1,000 (10 boys)
- Minnesota: 0.1 per 1,000 (7 boys)
- Pennsylvania: 0.0 per 1,000 (11 boys)
- California: 0.0 per 1,000 (36 boys)
Theodor by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1880s | 10 | #921 |
| 1890s | 6 | #955 |
| 1910s | 110 | #1,479 |
| 1920s | 139 | #1,796 |
| 1930s | 120 | #1,584 |
| 1940s | 113 | #1,691 |
| 1950s | 139 | #1,721 |
| 1960s | 124 | #1,956 |
| 1970s | 79 | #2,738 |
| 1980s | 98 | #3,334 |
| 1990s | 127 | #3,704 |
| 2000s | 189 | #3,549 |
| 2010s | 492 | #1,805 |
| 2020s | 470 | #1,826 |
Boy names about as popular as Theodor
Questions
- Is Theodor a boy or girl name?
- Theodor is mostly a boy name. Over the last 10 years, 100% of babies named Theodor were boys.
- How popular is the name Theodor?
- 76 baby boys were named Theodor in the US in 2025, making it the 1992nd most popular boy name.
- When was Theodor most popular?
- Theodor peaked in 2022, when 88 boys were given the name. Its highest rank was #921 in 1887.
- How many people are named Theodor?
- 2,216 babies have been named Theodor in the US since 1880. We estimate about 1,706 of them are alive in 2026, with a median age of 13.
- Where is Theodor most popular?
- From 2021 to 2025, Theodor was most common in New York, at 0.1 of every 1,000 boys born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.