Isidoro
Isidoro is a boy's name that peaked in 1929, when it was the 1,480th most popular in the United States. It has not appeared in the national data since 2023. About 850 Isidoros are alive in the United States today, and half of them are over 44.
Popularity, 1880–2025
boys named Isidoro
By the numbers
- Total US births
- 1,292
- Estimated living today
- 850
- Median age today
- 44
- Peak year
- 1929
- Best rank
- 1,480th
- Rank in 2025
- unranked
- First recorded
- 1913
How old the living Isidoros are
born that year still alive today
Of the 1,292 babies given the name since 1913, about 850 are alive — 66 in every hundred. The dotted line is the median: half were born before 1981 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.
Notable Isidoros
- Isidoro San José (born 1955)Spanish footballer
- Isidoro Díaz (born 1938)Mexican footballer
- Isidoro Sota (1902–1976)Mexican footballer
- Isidoro Ibarra (born 1992)Argentine field hockey player
- Isidoro Verga (1832–1899)Catholic cardinal
People named Isidoro with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Isidoro is most common
Relative to how many babies each state records, Isidoro is most concentrated in Texas (9.4×), California (2.4×).
Total births recorded in each state since 1910. Browse names by state.
Names of 1929
The most popular boys’ names the year Isidoro peaked:
Isidoro elsewhere
| Country | Spelling | Births | Best rank |
|---|---|---|---|
| France boys | Isidoro | 45 | 1,990th |
Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.
Where Isidoro lives in Spain
Not a count of births but of people: 9,984 men called Isidoro were living in Spain on 1 January 2025, of every age, born in any year. Where they live is not spread evenly.
Men: the provinces where it is densest
| Province | Spelling | People | Per thousand | Place there |
|---|---|---|---|---|
| Zamora | Isidoro | 121 | 1.476 | 108 |
| Salamanca | Isidoro | 217 | 1.364 | 112 |
| Cuenca | Isidoro | 117 | 1.159 | 121 |
| Ciudad Real | Isidoro | 283 | 1.153 | 121 |
| León | Isidoro | 233 | 1.068 | 137 |
| Cáceres | Isidoro | 200 | 1.040 | 144 |
Listed in 51 of Spain's 52 provinces. In the other 1 it is either held by fewer than 5 people – the point below which the source withholds a name – or it fell past the 5,000 names the source will print for one province. Neither means nobody there is called it. The rate is the source's own, not a share worked out here.
Related names
Isidoro 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.