The baby name Thadeus appears in baby name data for the United States from 1918 to 1978. It was most popular in 1918 with 15 babies given the name.
Over the period shown, Thadeus has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1918 | 15 |
| 1920 | 6 |
| 1923 | 6 |
| 1978 | 5 |