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Isidoro

Boys' name

English equivalent of Isidore

Isidoro has been given to 1,292 babies in the U.S. since 1913. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1929, with 24 recorded.

Babies named Isidoro, 2023

1 in 368,000

Isidoro over time, 1880–2025

Boys
010203018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Isidoro: meaning, origin, and history

English equivalent of Isidore

Deeper origin not confirmed in the cited records

What Isidoro means

Isidoro is a English equivalent of Isidore.

Origin, language, and formation

Isidoro is used in Italian and Spanish.

Related names and everyday forms

Related names include Isidore.

Pronunciation and spelling

In Italian, Isidoro is pronounced /i.ziˈdɔ.ro/.

American usage and historical context

In the United States, 1,292 boys were recorded with the name Isidoro between 1913 and 2023. Its highest annual count was 24 in 1929; its best national rank was #1,502 in 1929.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Isidoro?

Isidoro had fewer than 5 recorded uses in 2025, so these figures use 2023, the last year it was published.

Among all babies, 2023
1 in 368,000
9 of 3,314,783 births
Among boys only
1 in 190,000
<0.01% of boys
Rank, 2023
Unranked
Fewer than 5 uses
Coin-flip room size
255,294 kids
Even odds of a second one

Where Isidoro sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2023 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 255,294 children born in 2023 and it's an even bet that one of them is another Isidoro. In a class of 30 the chance is Under 1%.

When Isidoros were born

Half of everyone ever recorded as Isidoro was born before 1967 — so the typical Isidoro is around 58 today.

Median birth year
1967
About 58 years old
Biggest decade
1990s
12.2% of all use
Born in the last 25 years
14.0%
Spread across generations
Recorded since 1950
881
People you could plausibly meet
Choose a decade

1990s — 12.2% of all recorded uses (157).

Is Isidoro rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
—
Not ranked then
Rank vs 5 years ago
New entry
Not ranked then
Rank vs 10 years ago
—
Not ranked then
Births vs 10 years ago
—
Not published both years
Share of its own peak
0%
Peak was 1929 (24)
Years since peak
96
Years
Year-to-year steadiness
Volatile
38.4% average annual change
Best rank ever
#1,502
1929

Spellings of Isidoro

Isidoro is not the most common spelling — Isidro is, with 40.9% against Isidoro's 6.4%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Isidoro is used

Across 1910–2025, Isidoro was most concentrated in Texas — about 1 in 33,333 boys, against 1 in 91,493 across all states with data. It was least common in New York (1 in —).

03 per 100,000

Most concentrated

  1. 1Texas1 in 33,333
  2. 2California1 in 100,000
  3. 3New Mexico1 in 100,000
  4. 4Illinois1 in —
  5. 5New York1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Isidoro has too little recent state data to map, so this covers all years from 1910.

Isidoro around the world

Where Isidoro ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • France
    1925–1972
    #1,990
    in 1972
  • South Australia
    1963–1983
    #443
    in 1983

Popularity data from Institut national de la statistique et des études économiques and Consumer and Business Services (South Australia). INSEE data under Licence Ouverte / Etalab 2.0. CBS SA data under CC BY 4.0.

Isidoro by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#1,502
1929
Peak year
1929
24 that year
First recorded
1913
Last recorded
2023
All-time count
1,292
Count in 2025
Under 5

Names similar to Isidoro

Matched on shared beginnings and endings, similar length, and comparable popularity.

IsidoreIsidorTeodoroIsidroIsiahaTheodoroIsiaihIsileliIsiahIsiacEliodoroIsiaahIsiasTelesforoHeliodoroYsidoroTiodoroZoroIsiashCrisoforoOmoroGoroDaygoroEleodoro

Sibling names for Isidoro

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Isidoro

Top names of 1929, Isidoro's peak yearThe 1920s in fullOther names that peaked in 1929Boys' names starting with IRomantic Boy Names