Tadao
Tadao was last recorded in 1938, when 5 babies were given it; 295 Americans have been recorded with it between 1912 and 1938 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Tadao by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Tadao?
Unranked in 2025
Its last boys’ rank on record is #3,976, in 1938; SSA lists a name only in years with 5 or more births.
26 babies in 1920, the peak
Tadao peaked in 1920, when 26 boys were given it, #1,499 among boys’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 1938 | 5 | #3,976 | 4.5 |
| 1932 | 5 | #4,225 | 4.8 |
| 1931 | 10 | #2,629 | 9.6 |
| 1930 | 11 | #2,589 | 10.0 |
| 1929 | 9 | #2,951 | 8.4 |
| 1928 | 9 | #3,052 | 8.1 |
| 1927 | 12 | #2,513 | 10.6 |
| 1926 | 20 | #1,782 | 18.0 |
| 1925 | 16 | #2,075 | 14.3 |
| 1924 | 15 | #2,213 | 13.2 |
Every recorded year (21)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 1923 | 26 | #1,494 | 23.7 |
| 1922 | 21 | #1,756 | 19.3 |
| 1921 | 13 | #2,490 | 11.8 |
| 1920 | 26 | #1,499 | 24.4 |
| 1919 | 22 | #1,616 | 22.4 |
| 1918 | 15 | #2,150 | 14.8 |
| 1917 | 13 | #2,272 | 14.0 |
| 1916 | 13 | #2,246 | 14.6 |
| 1915 | 19 | #1,653 | 22.4 |
| 1914 | 9 | #2,433 | 13.7 |
| 1912 | 6 | #2,508 | 14.0 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Tadao a boy’s or a girl’s name?
Tadao has been recorded only for boys: SSA lists no girls with the name in 21 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Tadao: the SSA national file counts each sex separately.
How many people are named Tadao, and how old are they?
An estimated 3 Americans named Tadao and born in the U.S. are alive in 2026, too few to state an age range. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 126 people named Tadao (0 women and girls, 126 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 13 born in the U.S. The Census count is 9.7 times that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
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 Tadao born?
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| Hawaii | 156 | not ranked | 132.6× |
| California | 56 | not ranked | 6.1× |
Where Tadao is more common than its national share predicts
Relative to its national share, Tadao is most over-represented in Hawaii: since 1912 it was given 132.6 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 Tadao 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, Tadao is the second most given (4.8% of them). In 2025 none of their 753 babies recorded by SSA was a Tadao (SSA lists a name only with 5 or more babies of one sex).
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 Tadao
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 Tadao and names like it
- Compare Tadao and TadeoBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1920sTadao peaked in 1920.
- Hawaii’s most given namesThe state where SSA recorded the most babies named Tadao since 1910.
- The top names of 1920The year the most babies were named Tadao.
- Names starting with TMost given first.