Isador

Boys' name

Variant of Isidore

Isador has been given to 182 babies in the U.S. since 1892. 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 1915, with 14 recorded.

Babies named Isador, 2024

1 in 669,000

Isador over time, 1880–2025

Boys

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Isador: meaning, origin, and history

Variant of Isidore

Deeper origin not confirmed in the cited records

What Isador means

Isador is a variant of Isidore.

Documented naming usage and pronunciation

Isador is used in English (Rare).

Another recorded pronunciation is /ˈɪz.ə.ˌdɔɹ/ and /ˈɪz.ə.ˌdɔː/ for Isador.

Meaning behind the documented name family

The name developed through Isador → Isidore. The family’s meaning is “gift of (the goddess) Isis”, recorded in English.

Related names and everyday forms

Related names include Isidore.

American usage and historical context

In the United States, 182 boys were recorded with the name Isador between 1892 and 2024. Its highest annual count was 14 in 1915; its best national rank was #1,158 in 1892.

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 Isador?

Isador had fewer than 5 recorded uses in 2025, so these figures use 2024, the last year it was published.

Among all babies, 2024: 1 in 669,000; 5 of 3,342,801 births
Among boys only: 1 in 345,000; <0.01% of boys
Rank, 2024: Unranked; Fewer than 5 uses
Coin-flip room size: 463,412 kids; Even odds of a second one

Where Isador 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 2024 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 463,412 children born in 2024 and it's an even bet that one of them is another Isador. In a class of 30 the chance is Under 1%.

When Isadors were born

Half of everyone ever recorded as Isador was born before 1918 — so the typical Isador is around 107 today.

Median birth year: 1918; About 107 years old
Biggest decade: 1910s; 50.5% of all use
Born in the last 25 years: 2.7%; Mostly a past generation
Recorded since 1950: 5; People you could plausibly meet

Choose a decade

1910s — 50.5% of all recorded uses (92).

Is Isador 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 1915 (14)
Years since peak: 110; Years
Year-to-year steadiness: Volatile; 27.4% average annual change
Best rank ever: #1,158; 1892

Spellings of Isador

Isador is not the most common spelling — Isadore is, with 38.3% against Isador's 1.2%.

Isadore38.3%5,714
Isidore22.9%3,421
Amador22.6%3,372
Isidoro8.7%1,292
Sandor6.2%928
Isador1.2%182

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.

Isador 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: #1,158; 1892
Peak year: 1915; 14 that year
First recorded: 1892
Last recorded: 2024
All-time count: 182
Count in 2025: Under 5

Names similar to Isador

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

Isaack Isauro Isahi Isaiahs Isais Isaiyah Isandro Isaiha Isair Isayah Isahia Isaia Fyodor Isamar Isam Isaish Isack Isaic Isidor Isaul Fedor Teodor Isaid Isami

Sibling names for Isador

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

For a sister

Golda Lauretta Era Leatha Leone Mayme Artie Alpha

For a brother

Gustave Waldo Orrin Winfield Dorsey Aloysius Hyman Regis

Explore around Isador

Top names of 1915, Isador's peak year The 1910s in full Other names that peaked in 1892 Boys' names starting with I