5,964births recorded
2Countries
1Variants
1920Peak · Ontario
#5861United States 2025
Isadore is a boy name family recorded 5,964 times in 2 countries since 1880. It ranks highest today in the United States (#5861 in 2025). Its all-time peak was in Ontario in 1920, at 19.1 births per 100,000.
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
All forms of Isadore
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Isadore | English | 5,909 | 🇺🇸 United States | #5861 | 1913 | ▲ 5 % |
| Isadore | English | 55 | 🇨🇦 Ontario | – | 1920 | – |
Questions about Isadore
How popular is the name Isadore?
In 2025 it ranked #5861 in the United States. Official registers record 5,964 births across 2 countries.
When was Isadore most popular?
It peaked in Ontario in 1920, at 19.1 births per 100,000.
Is Isadore a boy or a girl name?
In official birth registers, Isadore is a boy name.