The baby name Oneil appears in baby name data for the United States from 1914 to 2012. It was most popular in 2001 with 21 babies given the name.
Over the period shown, Oneil has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1914 | 5 |
| 1915 | 5 |
| 1917 | 6 |
| 1920 | 10 |
| 1921 | 5 |
| 1922 | 17 |
| 1923 | 10 |
| 1924 | 10 |
| 1925 | 7 |
| 1926 | 5 |
| 1927 | 5 |
| 1929 | 6 |
| 1931 | 7 |
| 1932 | 5 |
| 1938 | 10 |
| 1941 | 8 |
| 1942 | 5 |
| 1943 | 5 |
| 1946 | 7 |
| 1948 | 6 |
| 1949 | 5 |
| 1952 | 5 |
| 1955 | 5 |
| 1958 | 5 |
| 1959 | 6 |
| 1962 | 5 |
| 1980 | 9 |
| 1981 | 6 |
| 1983 | 7 |
| 1986 | 9 |
| 1987 | 7 |
| 1988 | 6 |
| 1990 | 8 |
| 1992 | 13 |
| 1993 | 12 |
| 1994 | 8 |
| 1995 | 14 |
| 1996 | 8 |
| 1998 | 5 |
| 2000 | 6 |
| 2001 | 21 |
| 2002 | 9 |
| 2004 | 9 |
| 2005 | 17 |
| 2006 | 9 |
| 2007 | 8 |
| 2012 | 5 |