Tadeo has been given to about 5,843 people in the United States since 1880. It was most common in 2024, which makes it a current name.
Tadeo ranks 427th among American boys in 2025, with 753 born that year. Its best year was 2024, when 782 babies were given the name, ranking 412th. The typical living American called Tadeo is about 5 years old today. It is relatively most common in New Mexico, where it accounts for 0.06% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.