Total births
158
Boys' name · since 2007
Leonidus
Leonidus has 158 recorded births since 2007 in federal Social Security data, most heavily in 2008 -- full year-by-year trend, decade aggregates, and state rankings follow.
- #11749
- among boys today
- 158
- born since 2007
- 2010s
- peak decade
- 18%
- more common than other boys
Yes -- Leonidus is the #11749 most popular boys' name in the U.S. today, with 158 recorded since 2007.
According to the U.S. Social Security Administration, Leonidus has been recorded 158 times among boys since 2007, currently ranked #11749 nationally and more common than 18% of boys, with its heaviest use in the 2010s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 2007 to 2024.
- #11749 among boys today
- 158 born since 2007
- 2010s peak decade
- 18% more common than other boys
Data updated Jun 2026
The verdict
Leonidus is currently the #11749 boys' name in America, more common than 18% of boys - 158 born since 2007, peaking in the 2010s.
- #11749
- among boys today
- 158
- born since 2007
- 2010s
- peak decade
- 18%
- more common than other boys
Leonidus vs. every other boys name in current SSA rankings
#11749
of 14,294 boys in use
More common than 18% of names given to boys today.
2010s
Peak decade
69% of everyone ever named Leonidus was born in this single decade.
2008
Single peak year
16 babies were named Leonidus in 2008 - its busiest year on record.
How Leonidus compares
158 34th percentile among 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
Leonidus's all-time total is 57% below the median boys name, and Liam still leads by a wide margin.
| Metric | Leonidus | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 158 | 367 | 358,536 |
| Peak-year births | 16 | 23 | 22,252 |
Leonidus's usage pattern, beyond the headline number
Leonidus splits its recorded history at 2016: 43% of all births land in the more recent half, 57% in the earlier half, an evenly balanced pattern over time. The single quietest year was 2007 (5 births) -- compare that against the 2008 peak of 16 for a sense of just how much the name's popularity has swung.
Leonidus at a glance
Outside the top 1,000Peak year
2008
Current rank
#11,749
Active since
2007
Leonidus popularity over time
Annual U.S. births registered with the Social Security Administration · 2007–2024
- Peak year (2008)
- 16
- Annual births at peak, across 18 years of records
Leonidus by decade
Total births in each ten-year window, peak vs trough at a glance
2010s was Leonidus's strongest decade.
109 babies received the name during that ten-year window, about 69% of all-time use.
Leonidus births by decade
Total births in each ten-year window
- 2000s 21
2000s
21 births
- 2010s
2010s
109 births
- 2020s 28
2020s
28 births
What this shows Peak: 2010s at 109 births (69% of all-time use).
Frequently Asked Questions
How popular is the name Leonidus? ▼
158 babies have been named Leonidus since 2007. It currently ranks #11749 among boys. The peak year was 2008 with 16 births.
When was Leonidus most popular? ▼
Leonidus was most popular in the 2010s decade with 109 total births. The single peak year was 2008.
How long has the name Leonidus been used? ▼
The SSA has tracked Leonidus since 2007 -- 18 years through the most recent 2024 data.
What names are similar to Leonidus? ▼
Names with a similar sound or spelling include Leonard, Leo, Leon, Leonardo, and 4 more. These share a common prefix and are also used for boys.
What to do with Leonidus's data
- Leonidus's decade-level peak was the 2010s (109 total births); usage has since declined to 28 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- 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 Leonidus
Nearby Names Like Leonidus
Names with a similar sound, spelling, or feel to Leonidus
Leonard Boy
#670 294,334 births
Leo Boy
#24 259,988 births
Leon Boy
#141 182,638 births
Leonardo Boy
#84 96,066 births
Leonel Boy
#317 27,067 births
Compare Leonidus side by side: Leonidus vs Leonard Leonidus vs Leo Leonidus vs Leon
Related Names
Names with a similar popularity rank to Leonidus
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, 2007–2024 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Leonidus: #11749 Boys' Name - 158 Births, Peak 2008." NameAlmanac. Accessed via https://namealmanac.com/name/leonidus. 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 Leonidus 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.