Total births
35
Boys' name · since 1921
Ysidoro
Ysidoro has 35 recorded births since 1921 in federal Social Security data, most heavily in 1929 -- full year-by-year trend, decade aggregates, and state rankings follow.
- 35
- total births
- 1921–1956
- years on record
- 1920s
- peak decade
- 83%
- born in that decade
Ysidoro is not among the current top-ranked boys names; 35 have been recorded since 1921.
Ysidoro has 35 recorded births among boys since 1921, per the U.S. Social Security Administration, though it falls outside today's most-used boys names, busiest in the 1920s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1921 to 1956.
- 35 total births
- 1921–1956 years on record
- 1920s peak decade
- 83% born in that decade
Data updated Jun 2026
The verdict
35 boys have been named Ysidoro since 1921, peaking in the 1920s, last recorded in 1956.
- 35
- total births
- 1921–1956
- years on record
- 1920s
- peak decade
- 83%
- born in that decade
1920s
Peak decade
83% of everyone ever named Ysidoro was born in this single decade.
1929
Single peak year
7 babies were named Ysidoro in 1929 - its busiest year on record.
Ysidoro's usage pattern, beyond the headline number
Ysidoro splits its recorded history at 1928: 54% of all births land in the more recent half, 46% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1921 (5 births) -- compare that against the 1929 peak of 7 for a sense of just how much the name's popularity has swung.
Ysidoro at a glance
Last recorded 1956Peak year
1929
Current rank
Unranked
Active since
1921
Ysidoro popularity over time
Annual U.S. births registered with the Social Security Administration · 1921–1956
- Peak year (1929)
- 7
- Annual births at peak, across 36 years of records
Ysidoro by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Ysidoro's strongest decade.
29 babies received the name during that ten-year window, about 83% of all-time use.
Ysidoro births by decade
Total births in each ten-year window
- 1920s
1920s
29 births
- 1950s 6
1950s
6 births
What this shows Peak: 1920s at 29 births (83% of all-time use).
Ysidoro by state
Where Ysidoro concentrates geographically, total births since 1921
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Texas | | 11 | 31.4% |
Texas share of Ysidoro's total US births 31.4%
11 of 35 births nationwide.
Frequently Asked Questions
How popular is the name Ysidoro? ▼
Ysidoro has been given to 35 babies in the U.S. since 1921, according to SSA data. Its last appearance in the data was 1956. 7 babies were born in 1929, its single highest year.
When was Ysidoro most popular? ▼
Ysidoro was most popular in the 1920s decade with 29 total births. The single peak year was 1929.
Where is Ysidoro most popular? ▼
The top states for the name Ysidoro are Texas (11 births).
How long has the name Ysidoro been used? ▼
The SSA has tracked Ysidoro since 1921 -- 36 years through the most recent 1956 data.
What names are similar to Ysidoro? ▼
Names with a similar sound or spelling include Ysidro. These share a common prefix and are also used for boys.
What to do with Ysidoro's data
- Ysidoro's decade-level peak was the 1920s (29 total births); usage has since declined to 6 in the 1950s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Texas records the most Ysidoros (11 births) -- see the full state breakdown if geography matters to your decision. Texas 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 Ysidoro
Nearby Names Like Ysidoro
Names with a similar sound, spelling, or feel to Ysidoro
Compare Ysidoro side by side: Ysidoro vs Ysidro
Related Names
Names with a similar number of total births
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, 1921–1956 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Ysidoro: Baby Name Since 1921 - 35 Births, Peak 1929." NameAlmanac. Accessed via https://namealmanac.com/name/ysidoro. 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 Ysidoro 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.