Total births
309
Boys' name · since 1929
Theodoro
Since 1929, U.S. Social Security records show 309 babies named Theodoro, peaking in 2025. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #4099
- among boys today
- 309
- born since 1929
- 2020s
- peak decade
- 71%
- more common than other boys
Theodoro currently ranks #4099 among boys' names in America, with 309 babies recorded since 1929.
According to the U.S. Social Security Administration, Theodoro has been recorded 309 times among boys since 1929, currently ranked #4099 nationally and more common than 71% of boys, with its heaviest use in the 2020s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1929 to 2025.
- #4099 among boys today
- 309 born since 1929
- 2020s peak decade
- 71% more common than other boys
Data updated Jul 2026
The verdict
Theodoro is currently the #4099 boys' name in America, more common than 71% of boys - 309 born since 1929, peaking in the 2020s.
- #4099
- among boys today
- 309
- born since 1929
- 2020s
- peak decade
- 71%
- more common than other boys
Theodoro vs. every other boys name in current SSA rankings
#4099
of 14,294 boys in use
More common than 71% of names given to boys today.
2020s
Peak decade
44% of everyone ever named Theodoro was born in this single decade.
2025
Single peak year
43 babies were named Theodoro in 2025 - its busiest year on record.
How Theodoro compares
309 47th 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
Theodoro's all-time total is 16% below the median boys name, and Liam still leads by a wide margin.
| Metric | Theodoro | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 309 | 367 | 358,536 |
| Peak-year births | 43 | 23 | 22,252 |
Theodoro's usage pattern, beyond the headline number
Splitting Theodoro's full recorded timeline at 1990, 67% of its total births fall in the more recent half of the record versus 33% in the earlier half -- usage has skewed toward the present, not a one-decade spike. Its quietest year on record was 1929, with just 5 recorded births -- worth weighing against the 2025 peak of 43 to see the full range of the name's swing in popularity.
Theodoro at a glance
Outside the top 1,000Peak year
2025
Current rank
#4,099
Active since
1929
Theodoro popularity over time
Annual U.S. births registered with the Social Security Administration · 1929–2025
- Peak year (2025)
- 43
- Annual births at peak, across 97 years of records
Theodoro by decade
Total births in each ten-year window, peak vs trough at a glance
2020s was Theodoro's strongest decade.
137 babies received the name during that ten-year window, about 44% of all-time use.
Theodoro births by decade
Total births in each ten-year window
- 1920s 5
1920s
5 births
- 1930s 12
1930s
12 births
- 1940s 5
1940s
5 births
- 1950s 12
1950s
12 births
- 1960s 12
1960s
12 births
- 1970s 19
1970s
19 births
- 1980s 37
1980s
37 births
- 1990s 27
1990s
27 births
- 2000s 5
2000s
5 births
- 2010s 38
2010s
38 births
- 2020s
2020s
137 births
What this shows Peak: 2020s at 137 births (44% of all-time use).
Theodoro by state
Where Theodoro concentrates geographically, total births since 1929
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 16 | 5.2% |
| #2 | Texas | | 16 | 5.2% |
| #3 | Massachusetts | | 6 | 1.9% |
California share of Theodoro's total US births 5.2%
Even split
16 of 309 births nationwide. Compared to a flat distribution across 3 reporting states.
Frequently Asked Questions
How popular is the name Theodoro? ▼
Theodoro has been given to 309 babies in the U.S. since 1929, according to SSA data. Among boys, it ranks #4099 as of the latest data. 43 babies were born in 2025, its single highest year.
When was Theodoro most popular? ▼
Theodoro was most popular in the 2020s decade with 137 total births. The single peak year was 2025.
Where is Theodoro most popular? ▼
The top states for the name Theodoro are California (16 births), Texas (16 births), Massachusetts (6 births).
How long has the name Theodoro been used? ▼
Records for Theodoro go back to 1929, giving 97 years of history through 2025.
What names are similar to Theodoro? ▼
Names with a similar sound or spelling include Theodore, Theo, Theron, Theadore, and 4 more. These share a common prefix and are also used for boys.
What to do with Theodoro's data
- California records the most Theodoros (16 births) -- see the full state breakdown if geography matters to your decision. California 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 Theodoro
Nearby Names Like Theodoro
Names with a similar sound, spelling, or feel to Theodoro
Theodore Boy
#4 317,206 births
Theo Boy
#80 35,830 births
Theron Boy
#2837 12,960 births
Theadore Boy
#9912 4,005 births
Theophilus Boy
#2213 2,448 births
Compare Theodoro side by side: Theodoro vs Theodore Theodoro vs Theo Theodoro vs Theron
Related Names
Names with a similar popularity rank to Theodoro
Data Sources
Data as of July 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, 1929–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Theodoro: #4099 Boys' Name - 309 Births, Peak 2025." NameAlmanac. Accessed via https://namealmanac.com/name/theodoro. 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 Theodoro 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 July 2026.