Tadeo
Boy name · #427 in 2025 · Distinctive
How old is the name Tadeo? In official American birth records, Tadeo has been tracked continuously since 1968, giving it 57 years of documented American history.
Tadeo is currently the #427 boy name in the United States — 753 babies received it in 2025. A decade ago it stood at #1049, so the name has been rising over the past ten years. Roughly one in every 2,390 boys born in 2025 was named Tadeo.
The 57-year story
Tadeo first appears in the Social Security records in 1968, when 5 boys received the name. Its all-time peak is essentially right now: 2024, with 782 babies and a rank of #412. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Tadeo per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Tadeo against up to 5 other names.
Uniqueness: will there be another Tadeo in class?
On our rarity read — which blends how common Tadeo is today with its five-year momentum — the name reads as "distinctive". That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Tadeo is most common
Geography matters for names, and Tadeo is no exception. Adjusted for how many boys are born in each state, Tadeo is most common in AZ (1.1 per 1,000), CA (1.1 per 1,000), OR (1.1 per 1,000), TX (0.9 per 1,000), WA (0.8 per 1,000) — against a national average of about 0.5 per 1,000 boys. These are per-capita rates, so they show where Tadeo is a genuine regional favorite rather than just where the most babies are born.
Names like Tadeo
Statistically, parents drawn to Tadeo tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Teo, Matheo, Kaleo, Kylo, and Truett.
TeoMatheoKaleoKyloTruettCairoApolloElio
Rank history (last 25 years)
| Year | Babies named Tadeo | Rank |
|---|---|---|
| 2025 | 753 | #427 |
| 2024 | 782 | #412 |
| 2023 | 642 | #473 |
| 2022 | 568 | #521 |
| 2021 | 465 | #598 |
| 2020 | 361 | #702 |
| 2019 | 331 | #731 |
| 2018 | 266 | #837 |
| 2017 | 266 | #833 |
| 2016 | 221 | #944 |
| 2015 | 189 | #1049 |
| 2014 | 189 | #1052 |
| 2013 | 152 | #1180 |
| 2012 | 95 | #1626 |
| 2011 | 80 | #1795 |
| 2010 | 58 | #2239 |
| 2009 | 42 | #2847 |
| 2008 | 59 | #2237 |
| 2007 | 48 | #2564 |
| 2006 | 49 | #2477 |
| 2005 | 33 | #3091 |
| 2004 | 30 | #3217 |
| 2003 | 34 | #2847 |
| 2002 | 24 | #3554 |
| 2001 | 18 | #4302 |
Frequently asked questions
How old is the name Tadeo?
In official American birth records, the name Tadeo first appeared in 1968 (over 57 years ago), when 5 newborn boys received the name. It has been tracked in modern national records for 57 years.
Is Tadeo a popular boy name?
Tadeo ranked #427 among boys in 2025 with 753 babies given the name — inside the top 500: established but not ubiquitous. Ten years earlier it ranked #1049.
When was the name Tadeo most popular?
Tadeo peaked in 2024, when 782 American boys received the name (ranked #412 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Tadeo?
In 2025, roughly 1 in 2,390 newborn American boys was named Tadeo. On our rarity scale (rarity blended with momentum) we classify it as "distinctive".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.