Isidore
Isidore was the 3607th most popular name for boys in 2025, given to 31 babies. Its best year was 1914, when it ranked 379th; the most babies were born in 1919 (183). Over the last ten years it has moved up 3,646 places. More babies were named Isidore in the 1910s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #3,607 boys, up 3,600 places since 2020
- Babies in 2025
- 31boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 1919183 babies
- Total since 1880
- 3,421babies recorded
Isidore popularity since 1880
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #3,607 | 31 |
| 2020 | #7,207 | 11 |
| 2010 | #9,117 | 8 |
| 2000 | #9,553 | 6 |
| 1990 | #5,550 | 9 |
| 1980 | — | — |
| 1970 | #3,648 | 8 |
| 1960 | #1,942 | 18 |
| 1950 | #2,666 | 9 |
| 1940 | #3,000 | 7 |
| 1930 | #1,126 | 39 |
| 1920 | #535 | 130 |
| 1910 | #410 | 43 |
| 1900 | #662 | 15 |
| 1890 | — | — |
| 1880 | — | — |
How popular is Isidore, counting every spelling?
Isidore is the most common spelling of a name family that had 38 boys in 2025 across its spellings. Together these spellings went to 38 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Isidore | 31 | #3,607 | 145 |
| Isidor | 7 | #10,083 | 30 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Isidore?
31 of the 3,606,400 babies born in the US in 2025 were named Isidore (0.01 per 1,000 births). For a boy named Isidore 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 270 (of 430 pupils) would have a child named Isidore.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Isidore?
About 700 people born in the US named Isidore are alive today, with a median age of 23; half are between 7 and 66. That makes Isidore mostly worn by children and young adults. The wide spread shows a name popular in two different eras.
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.
Isidore by state
How common Isidore was among boys born in each state in 2021–2025. In 50 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 Isidore: their share of US boys followed the most similar curve since 1880. If you like Isidore, they share its era and feel.
Questions about the name Isidore
How popular is the name Isidore?
Isidore was the 3607th most popular name for boys in 2025, given to 31 babies. Its best year was 1914, when it ranked 379th; the most babies were born in 1919 (183). Over the last ten years it has moved up 3,646 places. More babies were named Isidore in the 1910s than in any other decade.
Is Isidore a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Isidore in the US.
Where is Isidore most popular?
In 2021–2025, Isidore was most common in New York (0.02 per 1,000 boys).