US rank #8292 Boys' name Peak 1916 5,699 births

Isadore — #8292 US boys' name

5,699 babies named Isadore in U.S. Social Security records since 1880, with the highest year being 1916. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1880s931890s1741900s3501910s19801920s13641930s4431940s2951950s2711960s1701970s1311980s901990s822000s922010s952020s69
#8292
of 14,243 boys in use

More common than 42% of names given to boys today.

1910s
Peak decade

35% of everyone ever named Isadore was born in this single decade.

1916
Single peak year

273 babies were named Isadore in 1916 — its busiest year on record.

What the Data Says About Isadore

The Social Security Administration has registered 5,699 babies named Isadore between 1880 and 2024, spanning 145 consecutive years of U.S. birth records. As a boy's name, Isadore currently holds the #8292 rank among boys for 2024. The name reached its historical peak in 1916, when 273 babies received it in a single year.

Decade-level aggregation shows that Isadore performed strongest in the 1910s, accumulating 1,980 births during that ten-year window. Across the 15 decades of recorded activity, Isadore shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Pennsylvania, which accounts for 674 births — the largest state-level total in the dataset — followed by New York and Illinois. In total, SSA state-level files list Isadore in 21 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Isadore in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 5,699 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.

Isadore at a glance

Outside the top 1,000

Total births

5,699

Since 1880

145 years of records

Peak year

1916

273 births that year

Strongest decade: 1910s

Current rank

#8,292

Among boys

As of 2024

Active since

1880

Recorded for 145 years

Last year on file: 2024

Isadore popularity over time — boys

Annual U.S. births registered with the Social Security Administration · 2024–1880

Outside the top 1,000
Peak year (1916)
273
Annual births at peak — across 145 years of records
-1000100200300 202420051986196719491931191318951880 9

Isadore popularity over time — girls

195 total births recorded since 1885 (Isadore as girls' name)

Unisex variant — 195 births
46810121416 20242017192519161911190218911885 5

Isadore by decade

Total births in each ten-year window — peak vs trough at a glance

Peak: 1910s
Peak decade
1910s
1,980 births that decade — 35% of Isadore's all-time total
1880s931890s1741900s3501910s19801920s13641930s4431940s2951950s2711960s1701970s1311980s901990s822000s922010s952020s69

Isadore by state

Where Isadore concentrates geographically — total births since 1880

Geographically diffuse
Top 8 states by recorded births for the name Isadore
Rank State Visual share Births Share of total
#1 Pennsylvania
674 11.8%
#2 New York
657 11.5%
#3 Illinois
258 4.5%
#4 New Jersey
187 3.3%
#5 Massachusetts
179 3.1%
#6 Michigan
142 2.5%
#7 Ohio
129 2.3%
#8 Louisiana
88 1.5%
Pennsylvania share of Isadore's total US births 11.8%
Even split

674 of 5,699 births nationwide. Compared to a flat distribution across 21 reporting states.

Isadore appears in 21 states. Explore state details →

Frequently Asked Questions

How popular is the name Isadore?
5,699 babies have been named Isadore since 1880. It currently ranks #8292 among boys. The peak year was 1916 with 273 births.
When was Isadore most popular?
Isadore was most popular in the 1910s decade with 1,980 total births. The single peak year was 1916.
Where is Isadore most popular?
The top states for the name Isadore are Pennsylvania (674 births), New York (657 births), Illinois (258 births).
How long has the name Isadore been used?
Isadore has been recorded in Social Security data since 1880, spanning 145 years of data through 2024.
What names are similar to Isadore?
Names with a similar sound or spelling include Isaac, Isaiah, Isaias, Isai, and 4 more. These share a common prefix and are also used for boys.

Keep exploring Isadore

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Data Sources

Data as of 2024. Source: U.S. Social Security Administration (SSA).

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1880–2024 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.

State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.