How many Thadeos are there in the world?

No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 100 people named Thadeo are estimated to be alive in the US today.

How popular is the name Thadeo in 2025?

Thadeo ranks #4050 among US boy names in 2025, with 26 babies given the name.

How rare is the name Thadeo?

About 1 in every 65,695 US boys born in 2025 was named Thadeo — 26 in all.

Will my child share the name Thadeo with classmates?

Thadeo will almost certainly be the only one in school.

Thadeo

Masculine

#4050 in the U.S.given to only a few children a year

rare26 boys in 2025

Thadeo entered the US charts in 2014 and is at its record high, #4050 in 2025 — given to only a few children a year.

How old is the name Thadeo?

Thadeo first appears in US birth records in 2014 — 11 years ago. Thadeo is overwhelmingly a brand-new baby name right now — most Thadeos are still in diapers. About 100 people named Thadeo are estimated to be alive in the US today.

When was the name Thadeo most popular?

Thadeo peaked in 2025, reaching #4050 nationally. Today it ranks #4050, exactly where it peaked. See the whole 2025 chart.

Compare this name More “T” names

Thadeo appears on this list:

What the data says

146 years of official birth records

The long climb, and where it stands now

The same years in position rather than babies

First recorded: 2014
Most boys named: 202526 — the highest on record
Peak rank: #4050reached in 2025
Change vs 2024: +30.0%26 in 2025, from 20

Thadeo sits in the rare tail. Its best year on record was 2025, with 26 boys. Today it is given to few enough children that it does not enter the ranked charts at all.

Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.

Thadeo in other languages

Strongest US states over the last decade: Texas, California.

Thadeos among us

100

people named Thadeo are estimated to be alive in the US today

About 1 boy in 65,695 born in 2025 was named Thadeo

Estimated from SSA birth records and published actuarial life tables. Method

Is it right for you

What happens to a name after it peaks

The Hyatt test

Every popular name lives one long story — a climb, a peak, a slow settling back. Thadeo's later chapters haven't been written yet, so we borrowed them: Hyatt climbed just as high around 1963, and its whole arc is on record. Line the two peaks up, and Hyatt's path sketches the road Thadeo is walking now.

40%chance Thadeo will feel “very 2020s” by 2040

Thadeo, aligned on its peakHyatt· peak 1963not yet written

Thadeo today is about where Hyatt stood in 1963 — in its own peak year. By 1978, Hyatt had settled around #4907.

Ages quietlysteadyDates fast

Thadeo sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.

A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored

Where Thadeo is headed

Thadeo is on a steep climb — if the curve holds, 2030 could see around 73% more babies given the name than today. Its history is short or jumpy, though, so read this as a sketch rather than a promise.

Rising+73% by 2030projected around #2,904 in 2030

Low confidence — fitted on official counts through 2025.

A damped-trend projection of the official birth data — a sketch of momentum, not a promise. Every name's forecast, ranked.

Thadeo beside its neighbors

The names ranked closest to Thadeo in 2025, in babies rather than position — the bars are to scale.

Thadeothis name26#4050Myer26#4050Hewitt26#4050Antonino26#4050Egan26#4050

US boys given each name in 2025.

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Thadeo

Masculine · #4050 in the U.S.

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Frequently asked

How many Thadeos are there in the world?: No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 100 people named Thadeo are estimated to be alive in the US today.
How popular is the name Thadeo in 2025?: Thadeo ranks #4050 among US boy names in 2025, with 26 babies given the name.
How rare is the name Thadeo?: About 1 in every 65,695 US boys born in 2025 was named Thadeo — 26 in all.
Will my child share the name Thadeo with classmates?: Thadeo will almost certainly be the only one in school.

Ranked beside Thadeo

Names sitting at a similar level of popularity right now.

Myer^#4050 · Hewitt^#4050 · Antonino^#4050 · Egan^#4050 · Johnmichael^#4050 · Gauge^#4050 · Emran^#4050 · Freeman^#4050

Looking for what else is popular rather than what resembles Thadeo? See the current top 100.

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US figures from the Social Security Administration. 1880–2025. Data & methodology

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