Sulo is a very rare boys' name that was most common in the 1910s and has all but disappeared.
Sulo is a boy name. It last appears in U.S. records in 1927. Sulo first appears in 1911 and peaked in 1918 (30 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1927 | 6 | — | #4,159 |
| 1926 | 8 | — | #3,349 |
| 1925 | 13 | — | #2,420 |
| 1924 | 6 | — | #4,291 |
| 1923 | 9 | — | #3,148 |
| 1922 | 8 | — | #3,500 |
| 1921 | 7 | — | #3,827 |
| 1920 | 12 | — | #2,585 |
| 1919 | 14 | — | #2,250 |
| 1918 | 30 | — | #1,312 |
| 1917 | 22 | — | #1,579 |
| 1916 | 15 | — | #2,032 |
| 1915 | 27 | — | #1,300 |
| 1914 | 16 | — | #1,600 |
| 1913 | 12 | — | #1,666 |
| 1912 | 8 | — | #2,029 |
| 1911 | 7 | — | #1,520 |