Tatsuo
Tatsuo is a boy's name that peaked in 1916, when it was the 824th most popular in the United States. It has not appeared in the national data since 1940. About 3 Tatsuos are alive in the United States today, and half of them are over 85.
Popularity, 1880–2025
boys named Tatsuo
By the numbers
- Total US births
- 222
- Estimated living today
- 3
- Median age today
- 85
- Peak year
- 1916
- Best rank
- 824th
- Rank in 2025
- unranked
- First recorded
- 1915
How old the living Tatsuos are
born that year still alive today
Of the 222 babies given the name since 1915, about 3 are alive — 2 in every hundred. The dotted line is the median: half were born before 1940 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Notable Tatsuos
- Peter Tatsuo Doi (1892–1970)Japanese Cardinal of the Roman Catholic Church
- Tatsuo Hori (1904–1953)writer, poet, and translator in Japan
- Tatsuo Fujimoto (born 1940)Japanese Olympic swimmer
- Tatsuo Yoshida (1932–1977)Japanese mangaka and animator
People named Tatsuo with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Tatsuo is most common
Relative to how many babies each state records, Tatsuo is most concentrated in Hawaii (243.6×), California (2.4×).
Total births recorded in each state since 1910. Browse names by state.
Names of 1916
The most popular boys’ names the year Tatsuo peaked:
Related names
Tatsuo against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.