Total births
419
Boys' name · since 1883
Isidor
419 babies named Isidor in U.S. Social Security records since 1883, with the highest year being 1914. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #9014
- among boys today
- 419
- born since 1883
- 1910s
- peak decade
- 37%
- more common than other boys
419 babies have been named Isidor since 1883, making it today's #9014 boys' name.
According to the U.S. Social Security Administration, Isidor has been recorded 419 times among boys since 1883, currently ranked #9014 nationally and more common than 37% of boys, with its heaviest use in the 1910s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1883 to 2025.
- #9014 among boys today
- 419 born since 1883
- 1910s peak decade
- 37% more common than other boys
Data updated Jun 2026
The verdict
Isidor is currently the #9014 boys' name in America, more common than 37% of boys - 419 born since 1883, peaking in the 1910s.
- #9014
- among boys today
- 419
- born since 1883
- 1910s
- peak decade
- 37%
- more common than other boys
Isidor vs. every other boys name in current SSA rankings
#9014
of 14,294 boys in use
More common than 37% of names given to boys today.
1910s
Peak decade
38% of everyone ever named Isidor was born in this single decade.
1914
Single peak year
24 babies were named Isidor in 1914 - its busiest year on record.
How Isidor compares
419 Top 47% higher than 53% of 14,294 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Isidor's all-time total is 14% above the median boys name, and Liam still leads by a wide margin.
| Metric | Isidor | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 419 | 367 | 358,536 |
| Peak-year births | 24 | 23 | 22,252 |
Isidor's usage pattern, beyond the headline number
Splitting Isidor's full recorded timeline at 1921, 40% of its total births fall in the more recent half of the record versus 60% in the earlier half -- the name was more prevalent in its earlier era than it is today. Its quietest year on record was 1888, with just 5 recorded births -- worth weighing against the 1914 peak of 24 to see the full range of the name's swing in popularity.
Isidor at a glance
Outside the top 1,000Peak year
1914
Current rank
#9,014
Active since
1883
Isidor popularity over time
Annual U.S. births registered with the Social Security Administration · 1883–2025
- Peak year (1914)
- 24
- Annual births at peak, across 143 years of records
Isidor by decade
Total births in each ten-year window, peak vs trough at a glance
1910s was Isidor's strongest decade.
160 babies received the name during that ten-year window, about 38% of all-time use.
Isidor births by decade
Total births in each ten-year window
- 1880s 18
1880s
18 births
- 1890s 36
1890s
36 births
- 1900s 22
1900s
22 births
- 1910s
1910s
160 births
- 1920s
1920s
67 births
- 1930s 36
1930s
36 births
- 1940s 6
1940s
6 births
- 1950s 33
1950s
33 births
- 1960s 6
1960s
6 births
- 2010s 5
2010s
5 births
- 2020s 30
2020s
30 births
What this shows Peak: 1910s at 160 births (38% of all-time use).
Isidor by state
Where Isidor concentrates geographically, total births since 1883
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | New York | | 97 | 23.2% |
New York share of Isidor's total US births 23.2%
97 of 419 births nationwide.
Frequently Asked Questions
How popular is the name Isidor? ▼
Isidor has been given to 419 babies in the U.S. since 1883, according to SSA data. Among boys, it ranks #9014 as of the latest data. 24 babies were born in 1914, its single highest year.
When was Isidor most popular? ▼
Isidor was most popular in the 1910s decade with 160 total births. The single peak year was 1914.
Where is Isidor most popular? ▼
The top states for the name Isidor are New York (97 births).
How long has the name Isidor been used? ▼
Isidor has been recorded in Social Security data since 1883, spanning 143 years of data through 2025.
What names are similar to Isidor? ▼
Names with a similar sound or spelling include Isiah, Isidro, Isidore, Isidoro, and 4 more. These share a common prefix and are also used for boys.
What to do with Isidor's data
- Isidor's decade-level peak was the 1910s (160 total births); usage has since declined to 30 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- New York records the most Isidors (97 births) -- see the full state breakdown if geography matters to your decision. New York names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Isidor
Nearby Names Like Isidor
Names with a similar sound, spelling, or feel to Isidor
Isiah Boy
#1309 24,710 births
Isidro Boy
#1755 8,211 births
Isidore Boy
#3456 3,421 births
Isidoro Boy
1,292 births
Isiaha Boy
352 births
Compare Isidor side by side: Isidor vs Isiah Isidor vs Isidro Isidor vs Isidore
Related Names
Names with a similar popularity rank to Isidor
Chauncy #9013
1,257 births · Peak 1978
Haskell #9015
3,700 births · Peak 1919
Kelley #9012
6,286 births · Peak 1968
Ingram #9016
419 births · Peak 1917
Dionicio #9011
2,094 births · Peak 1976
Cleon #9017
3,000 births · Peak 1921
Harvie #9010
1,646 births · Peak 1922
Aleck #9018
1,223 births · Peak 1917
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1883–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Isidor: #9014 Boys' Name - 419 Births, Peak 1914." NameAlmanac. Accessed via https://namealmanac.com/name/isidor. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Isidor draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.