Boys' name · since 1881
Isidore
Since 1881, U.S. Social Security records show 3,421 babies named Isidore, peaking in 1919. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #2,322 of 45,481
- all-time among boys
- #3,584 of 13,930
- 2025 SSA year
- 3,421
- born since 1881
- 1910s
- peak decade
Isidore currently ranks #3584 among boys' names in America, with 3,421 babies recorded since 1881.
Social Security Administration records show Isidore recorded 3,421 times among boys since 1881, holding rank #3584 nationally today, ahead of 74% of boys, peaking in the 1910s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1881 to 2025.
- #2,322 of 45,481 all-time among boys
- #3,584 of 13,930 2025 SSA year
- 3,421 born since 1881
- 1910s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Isidore ranks #2,322 of 45,481 boys' names by all-time recorded births (highest first) and #3,584 of 13,930 among boys' names in 2025. 3,421 born since 1881, peaking in the 1910s.
- #2,322 of 45,481
- all-time among boys
- #3,584 of 13,930
- 2025 SSA year
- 3,421
- born since 1881
- 1910s
- peak decade
Isidore's 3,421 recorded births place it above 94.89% of the 45,481 boys names in the full SSA archive.
The state file records this name in 5 jurisdictions, led by New York.
How Isidore compares
3,421 Top 16% higher than 84% of 13,930 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
Isidore's all-time total is 9x the median boys name, and Liam still leads by a wide margin.
| Metric | Isidore | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 3,421 | 369 | 358,536 |
| Peak-year births | 183 | 34 | 22,252 |
Isidore's usage pattern, beyond the headline number
Splitting Isidore's full recorded timeline at 1946, 21% of its total births fall in the more recent half of the record versus 79% in the earlier half -- the name was more prevalent in its earlier era than it is today. Its quietest year on record was 1882, with just 5 recorded births -- worth weighing against the 1919 peak of 183 to see the full range of the name's swing in popularity.
Isidore popularity over time
Annual U.S. births registered with the Social Security Administration · 1881–2025
- Peak year (1919)
- 183
- Annual births at peak, across 145 years of records
Isidore by decade
1910s is the heaviest window (1,357 births, 40% of the file).
1910s was Isidore's strongest decade.
1,357 babies received the name during that ten-year window, about 40% of all-time use.
Isidore births by decade
Total births in each ten-year window
- 1880s 39
1880s
39 births
- 1890s 72
1890s
72 births
- 1900s 159
1900s
159 births
- 1910s
1910s
1,357 births
- 1920s
1920s
849 births
- 1930s 180
1930s
180 births
- 1940s 101
1940s
101 births
- 1950s 135
1950s
135 births
- 1960s 98
1960s
98 births
- 1970s 31
1970s
31 births
- 1980s 20
1980s
20 births
- 1990s 30
1990s
30 births
- 2000s 64
2000s
64 births
- 2010s 130
2010s
130 births
- 2020s 156
2020s
156 births
What this shows Peak: 1910s at 1,357 births (40% of all-time use).
How Isidore compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Isidore's total volume
Isidore by state
Where Isidore concentrates geographically, total births since 1881
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | New York | | 1,861 | 54.4% |
| #2 | Pennsylvania | | 36 | 1.1% |
| #3 | Massachusetts | | 6 | 0.2% |
| #4 | Maryland | | 5 | 0.1% |
| #5 | Texas | | 5 | 0.1% |
1,861 of 3,421 births nationwide. Compared to a flat distribution across 5 reporting states.
Frequently Asked Questions
How popular is the name Isidore? ▼
Where does Isidore sit in the SSA name archive? ▼
When was Isidore most popular? ▼
Where is Isidore most popular? ▼
How long has the name Isidore been used? ▼
What names are similar to Isidore? ▼
What to do with Isidore's data
- Isidore's decade-level peak was the 1910s (1,357 total births); usage has since declined to 156 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- New York records the most Isidores (1,861 births) -- see the full state breakdown if geography matters to your decision. New York names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Isidore
Nearby Names Like Isidore
Names with a similar sound, spelling, or feel to Isidore
Compare Isidore side by side: Isidore vs Isiah Isidore vs Isidro Isidore vs Isidoro
Related Names
Names with a similar popularity rank to Isidore
Nationwide names with similar peak year or record span
Two nationwide peer axes for Isidore: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1919)
Similar record span (~144 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 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, 1881–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
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 Isidore 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 August 2026.