4,030births recorded
2Countries
1Variants
1951Peak · Ontario
#12008United States 2025
Theadore is a boy name family recorded 4,030 times in 2 countries since 1880. It ranks highest today in the United States (#12008 in 2025). Its all-time peak was in Ontario in 1951, at 8.3 births per 100,000.
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
All forms of Theadore
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Theadore | English | 4,005 | 🇺🇸 United States | #12008 | 1884 | ▼ 32 % |
| Theadore | English | 25 | 🇨🇦 Ontario | – | 1951 | – |
Questions about Theadore
How popular is the name Theadore?
In 2025 it ranked #12008 in the United States. Official registers record 4,030 births across 2 countries.
When was Theadore most popular?
It peaked in Ontario in 1951, at 8.3 births per 100,000.
Is Theadore a boy or a girl name?
In official birth registers, Theadore is a boy name.