Isadore
Isadore is a boy's name that peaked in 1916, when it was the 318th most popular in the United States. In 2025 it ranked 5,861st. About 1,100 Isadores are alive in the United States today, and half of them are over 52.
Popularity, 1880–2025
girls named Isadore boys named Isadore
By the numbers
- Total US births
- 5,909
- Estimated living today
- 1,100
- Median age today
- 52
- Peak year
- 1916
- Best rank
- 318th
- Rank in 2025
- 5,861st
- First recorded
- 1880
- Girls / boys
- 195 / 5,714
How old the living Isadores are
born that year still alive today
Of the 5,909 babies given the name since 1880, about 1,100 are alive — 19 in every hundred. The dotted line is the median: half were born before 1973 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Where the name comes from
Origin Ancient Greek
A non-standard variant of Isidore, possibly inspired by the well-known feminine variant Isadora of Isidora.
Etymology from Wiktionary, used under CC BY-SA 4.0.
Notable Isadores
- Isadore Singer (1924–2021)American mathematician
People named Isadore with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Isadore is most common
Relative to how many babies each state records, Isadore is most concentrated in Pennsylvania (4.5×), New York (3.0×), Massachusetts (2.6×), New Jersey (2.4×).
Total births recorded in each state since 1910. Browse names by state.
Names of 1916
The most popular boys’ names the year Isadore peaked:
Related names
Isadore against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.