The baby name Cornelio appears in baby name data for the United States from 1919 to 2018. It was most popular in 1947 with 41 babies given the name.
In the later years of this period, Cornelio has become less common than it once was.
| Year | Count |
|---|---|
| 1919 | 5 |
| 1923 | 5 |
| 1925 | 6 |
| 1927 | 9 |
| 1928 | 7 |
| 1939 | 8 |
| 1941 | 7 |
| 1943 | 9 |
| 1945 | 7 |
| 1947 | 41 |
| 1948 | 6 |
| 1949 | 5 |
| 1955 | 15 |
| 1959 | 12 |
| 1960 | 10 |
| 1962 | 12 |
| 1963 | 10 |
| 1965 | 12 |
| 1967 | 16 |
| 1971 | 15 |
| 1972 | 8 |
| 1973 | 7 |
| 1974 | 7 |
| 1975 | 8 |
| 1978 | 5 |
| 1979 | 8 |
| 1981 | 7 |
| 1982 | 5 |
| 1984 | 6 |
| 1986 | 8 |
| 1989 | 10 |
| 1990 | 13 |
| 1991 | 5 |
| 1993 | 7 |
| 1994 | 6 |
| 1995 | 5 |
| 1996 | 6 |
| 1997 | 5 |
| 1998 | 7 |
| 1999 | 5 |
| 2006 | 7 |
| 2013 | 10 |
| 2018 | 5 |