The baby name Pius appears in baby name data for the United States from 1917 to 1936. It was most popular in 1922 with 21 babies given the name.
Over the period shown, Pius has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1917 | 5 |
| 1918 | 5 |
| 1920 | 6 |
| 1921 | 8 |
| 1922 | 21 |
| 1924 | 10 |
| 1925 | 9 |
| 1927 | 9 |
| 1928 | 5 |
| 1931 | 5 |
| 1934 | 7 |
| 1936 | 6 |