Tadeo
Tadeo was given to 753 boys in 2025, #427 among boys’ names; 5,843 Americans have been recorded with it since 1968 (Social Security Administration, published May 2026).
An estimated 5,800 Americans named Tadeo and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 5 years old and half are between 2 and 9.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Tadeo by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Tadeo mean?
Wiktionary, Spanish section
Tadeo is “a male given name, equivalent to English Thaddaeus or Thaddeus”
Borrowed from Latin Thaddaeus.
/taˈdeo/
Meaning: Wiktionary, Spanish section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Tadeo?
#427 among boys’ names, 2025
Tadeo rose from #1,056 in 2015 to #427 in 2025 among boys’ names; its share of boys born rose from 0.10 to 0.44 per 1,000.
782 babies in 2024, the peak
Tadeo peaked in 2024, when 782 boys were given it, #412 among boys’ names. The 753 births of 2025 are 96% of that peak.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 753 | #427 | 0.44 |
| 2024 | 782 | #412 | 0.45 |
| 2023 | 642 | #473 | 0.38 |
| 2022 | 568 | #522 | 0.33 |
| 2021 | 465 | #598 | 0.27 |
| 2020 | 361 | #704 | 0.21 |
| 2019 | 331 | #731 | 0.18 |
| 2018 | 266 | #839 | 0.15 |
| 2017 | 266 | #834 | 0.14 |
| 2016 | 221 | #945 | 0.12 |
Every recorded year (37)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 189 | #1,056 | 0.10 |
| 2014 | 189 | #1,053 | 0.10 |
| 2013 | 152 | #1,184 | 0.08 |
| 2012 | 95 | #1,633 | 0.05 |
| 2011 | 80 | #1,806 | 0.04 |
| 2010 | 58 | #2,256 | 0.03 |
| 2009 | 42 | #2,886 | 0.02 |
| 2008 | 59 | #2,257 | 0.03 |
| 2007 | 48 | #2,595 | 0.02 |
| 2006 | 49 | #2,505 | 0.02 |
| 2005 | 33 | #3,157 | 0.02 |
| 2004 | 30 | #3,271 | 0.02 |
| 2003 | 34 | #2,914 | 0.02 |
| 2002 | 24 | #3,648 | 0.01 |
| 2001 | 18 | #4,438 | 0.01 |
| 2000 | 11 | #6,246 | 0.01 |
| 1999 | 12 | #5,603 | 0.01 |
| 1998 | 9 | #6,762 | under 0.01 |
| 1997 | 5 | #10,606 | under 0.01 |
| 1993 | 9 | #6,157 | under 0.01 |
| 1992 | 5 | #9,638 | under 0.01 |
| 1991 | 8 | #6,434 | under 0.01 |
| 1990 | 5 | #9,329 | under 0.01 |
| 1989 | 7 | #6,839 | under 0.01 |
| 1987 | 6 | #6,836 | under 0.01 |
| 1986 | 6 | #6,623 | under 0.01 |
| 1968 | 5 | #4,670 | under 0.01 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Tadeo a boy’s or a girl’s name?
Tadeo has been recorded only for boys: SSA lists no girls with the name in 37 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Tadeo: the SSA national file counts each sex separately.
How many people are named Tadeo, and how old are they?
5,800 alive in 2026, estimated
That is 99% of the 5,843 Americans ever recorded as Tadeo. The median Tadeo alive today is 5 years old; half are between 2 and 9.
The 2020 Census counted 2,089 people named Tadeo (7 women and girls, 2,082 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 2,343 born in the U.S. The Census count is 11% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Generation X | 1965-1980 | 4 |
| Millennials | 1981-1996 | 44 |
| Generation Z | 1997-2012 | 599 |
| Generation Alpha | 2013-2025 | 5,150 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Tadeo born?
The states with the most babies named Tadeo are California, Texas and Arizona, with 52% of its births recorded by state in 2025; Arizona is not among the ten states with the most births.
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| California | 192 | #192 | 2.0× |
| Texas | 155 | #253 | 2.5× |
| Arizona | 36 | #231 | 2.1× |
| Illinois | 35 | #314 | 1.3× |
| Georgia | 28 | #413 | 0.7× |
| North Carolina | 27 | #415 | 0.6× |
| Washington | 25 | #307 | 0.8× |
| Florida | 18 | #843 | 0.4× |
| Colorado | 16 | #397 | 1.0× |
| New York | 16 | #881 | 0.2× |
Where Tadeo is more common than its national share predicts
Relative to its national share, Tadeo is most over-represented in Texas: since 1968 it was given 2.5 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Tadeo with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 2 names spelled alike, given to 6,138 babies since 1880, Tadeo is the most given (95% of them). In 2025 it was given to 753 of their 753 babies (100%), again the most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Tadeo
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Tadeo and names like it
- Compare Tadeo and TadaoBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sTadeo peaked in 2024.
- Texas’s most given namesThe state where SSA recorded the most babies named Tadeo since 1910.
- Spanish namesWiktionary’s origin for Tadeo: every such name, by how often it is given.
- The top names of 2024The year the most babies were named Tadeo.
- The names of Generation AlphaMost people named Tadeo alive today were born 2013-2025.
- Names starting with TMost given first.