Soo is a very rare girls' name that was most common in the 1980s and has all but disappeared.
Soo is predominantly a girl name. It last appears in U.S. records in 2004. Soo was first reported in SSA data in 1961 and peaked in 1990 (14 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2004 | 5 | 5 | #18,447 | — |
| 2001 | 5 | 5 | #17,606 | — |
| 2000 | 7 | 7 | #12,965 | — |
| 1999 | 7 | 7 | #12,519 | — |
| 1996 | 9 | — | #9,483 | — |
| 1994 | 13 | — | #10,416 | #10,052 |
| 1993 | 7 | — | #11,642 | — |
| 1992 | 10 | — | #8,667 | — |
| 1991 | 9 | — | #9,255 | — |
| 1990 | 14 | — | #6,429 | — |
| 1989 | 11 | — | #7,392 | — |
| 1987 | 6 | — | #11,117 | — |
| 1985 | 9 | — | #7,478 | — |
| 1984 | 15 | — | #9,013 | #4,904 |
| 1983 | 8 | — | #7,936 | — |
| 1982 | 11 | — | #6,308 | — |
| 1981 | 12 | — | #8,943 | #7,136 |
| 1979 | 7 | — | #8,883 | — |
| 1978 | 5 | — | #11,230 | — |
| 1976 | 9 | — | #6,526 | — |
| 1975 | 7 | — | #7,848 | — |
| 1974 | 9 | — | #6,184 | — |
| 1972 | 6 | — | #8,113 | — |
| 1970 | 5 | — | #9,144 | — |
| 1961 | 5 | — | #7,401 | — |