Total births
126
Boys' name · since 2014
Thadeo
126 babies named Thadeo in U.S. Social Security records since 2014, with the highest year being 2025. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #5058
- among boys today
- 126
- born since 2014
- 2020s
- peak decade
- 65%
- more common than other boys
126 babies have been named Thadeo since 2014, making it today's #5058 boys' name.
According to the U.S. Social Security Administration, Thadeo has been recorded 126 times among boys since 2014, currently ranked #5058 nationally and more common than 65% 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 2014 to 2025.
- #5058 among boys today
- 126 born since 2014
- 2020s peak decade
- 65% more common than other boys
Data updated Jun 2026
The verdict
Thadeo is currently the #5058 boys' name in America, more common than 65% of boys - 126 born since 2014, peaking in the 2020s.
- #5058
- among boys today
- 126
- born since 2014
- 2020s
- peak decade
- 65%
- more common than other boys
Thadeo vs. every other boys name in current SSA rankings
#5058
of 14,294 boys in use
More common than 65% of names given to boys today.
2020s
Peak decade
76% of everyone ever named Thadeo was born in this single decade.
2025
Single peak year
26 babies were named Thadeo in 2025 - its busiest year on record.
How Thadeo compares
126 30th 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
Thadeo's all-time total is 66% below the median boys name, and Liam still leads by a wide margin.
| Metric | Thadeo | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 126 | 367 | 358,536 |
| Peak-year births | 26 | 23 | 22,252 |
Thadeo's usage pattern, beyond the headline number
Divide Thadeo's SSA record in two at 2021 and the more recent half accounts for 70% of all births, the earlier half the remaining 30%, consistent with a name still gaining ground rather than fading. Its calmest year was 2014, with only 5 births recorded -- set against the 2025 peak of 26, that's the full swing in one name's fortunes.
Thadeo at a glance
Outside the top 1,000Peak year
2025
Current rank
#5,058
Active since
2014
Thadeo popularity over time
Annual U.S. births registered with the Social Security Administration · 2014–2025
- Peak year (2025)
- 26
- Annual births at peak, across 12 years of records
Thadeo by decade
Total births in each ten-year window, peak vs trough at a glance
2020s was Thadeo's strongest decade.
96 babies received the name during that ten-year window, about 76% of all-time use.
Thadeo births by decade
Total births in each ten-year window
- 2010s 30
2010s
30 births
- 2020s
2020s
96 births
What this shows Peak: 2020s at 96 births (76% of all-time use).
Thadeo by state
Where Thadeo concentrates geographically, total births since 2014
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Texas | | 19 | 15.1% |
| #2 | California | | 11 | 8.7% |
Texas share of Thadeo's total US births 15.1%
Even split
19 of 126 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Thadeo? ▼
Since 2014, Social Security records show 126 babies named Thadeo. Today it holds rank #5058 among boys. Its busiest year on record was 2025, with 26 births.
When was Thadeo most popular? ▼
Thadeo was most popular in the 2020s decade with 96 total births. The single peak year was 2025.
Where is Thadeo most popular? ▼
The top states for the name Thadeo are Texas (19 births), California (11 births).
How long has the name Thadeo been used? ▼
The SSA has tracked Thadeo since 2014 -- 12 years through the most recent 2025 data.
What names are similar to Thadeo? ▼
Names with a similar sound or spelling include Thaddeus, Thad, Thatcher, Thane, and 4 more. These share a common prefix and are also used for boys.
What to do with Thadeo's data
- Texas records the most Thadeos (19 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 Thadeo
Nearby Names Like Thadeo
Names with a similar sound, spelling, or feel to Thadeo
Thaddeus Boy
#852 26,057 births
Thad Boy
#12364 8,219 births
Thatcher Boy
#1040 4,955 births
Thane Boy
#2967 2,604 births
Thayne Boy
#6507 1,450 births
Compare Thadeo side by side: Thadeo vs Thaddeus Thadeo vs Thad Thadeo vs Thatcher
Related Names
Names with a similar popularity rank to Thadeo
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, 2014–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Thadeo: #5058 Boys' Name - 126 Births, Peak 2025." NameAlmanac. Accessed via https://namealmanac.com/name/thadeo. 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 Thadeo 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.