How Many People Are Named Isidor?
Complete statistics for the name Isidor in the United States — including rarity score, gender breakdown, age distribution, historical popularity, and state data.
Data last updated: 2025 SSA records
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Normalized logarithmic scale (0–100)
male
Population Share
How Many People Have the Name Isidor in the US?
Based on Social Security Administration birth records and age-adjusted survival modeling, approximately 411 people in the United States currently share the name Isidor. That works out to roughly 1 in every 802,920 Americans, placing it in the Very Rare category among all names tracked in US records. For context on where this falls on the full spectrum, see the name rarity guide.
Is Isidor a Common or Rare Name?
Isidor is classified as Very Rare when scored against the entire US population. Our rarity scale runs from Very Common (top names shared by millions) through Common, Uncommon, Rare, and Very Rare. Understanding where a name sits helps parents gauge uniqueness when choosing a baby name, genealogists narrow down records, and curious individuals settle debates about their own identity.
What Does the Name Isidor Mean?
The meaning, language of origin, cultural and religious background for Isidor are covered in full on the Isidor name meaning & origin page. For a broader look at thousands of names, browse the name meaning directory.
Gender Breakdown: Is Isidor Male or Female?
Of all recorded bearers of Isidor in SSA data, approximately 100% are male and 0% are female. Isidor is used almost exclusively as a male name in the United States. See our guide to gender-neutral names for more on how naming norms evolve.
When Was Isidor Most Popular?
The name Isidor reached peak popularity in 1914, with 24 babies registered that year. Our article on 2025 baby name trends explores these forces in detail.
Where Is Isidor Most Common in the US?
The state-by-state breakdown above shows estimated bearer counts for Isidor across all 50 states. Highly populous states like California, Texas, and New York naturally show higher counts for almost every name simply due to population size.
How Is This Data Calculated?
All figures on this page are statistical estimates, not exact government headcounts. The underlying data comes from the SSA National Baby Names dataset. Full methodology is explained on the methodology page.
How many people are named Isidor?
Approximately 411 people in the United States share the name Isidor, based on SSA birth records and age-adjusted survival modeling.
Is Isidor a rare name?
Isidor is classified as Very Rare in the United States. Approximately 1 in every 802,920 Americans has this name.
What does the name Isidor mean?
The meaning and origin of Isidor is displayed in the Name Meaning and Origin section at the top of this page. Browse the name meaning directory at https://howmanyofme.site/name-meaning/ for more names.
Is Isidor more male or female?
Based on SSA records, 100% of people named Isidor are male and 0% are female. The predicted gender is Male.
When was Isidor most popular?
The name Isidor reached its peak in 1914, with 24 registrations that year.
Are these statistics exact?
No. All figures are statistical estimates based on SSA birth records and age-adjusted modeling. Exact real-time name counts are not publicly available. See the methodology page at https://howmanyofme.site/methodology/ for full details.