Janssen is a very rare boys' name that peaked in 1964 and has since faded.
Janssen is a boy name. It last appears in U.S. records in 2024. Janssen was first reported in SSA data in 1964 and peaked in 1964 (16 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2024 | 6 | 6 | #11,516 |
| 2020 | 12 | 12 | #6,789 |
| 2017 | 5 | 5 | #13,105 |
| 2012 | 6 | 6 | #11,388 |
| 2009 | 6 | 6 | #11,592 |
| 2008 | 10 | 10 | #7,949 |
| 2005 | 5 | 5 | #12,201 |
| 2002 | 6 | 6 | #9,923 |
| 2000 | 5 | 5 | #11,124 |
| 1998 | 6 | 6 | #8,951 |
| 1997 | 5 | — | #9,898 |
| 1994 | 5 | — | #9,427 |
| 1993 | 6 | — | #8,069 |
| 1992 | 9 | — | #5,844 |
| 1991 | 5 | — | #8,758 |
| 1990 | 6 | — | #7,543 |
| 1989 | 6 | — | #7,375 |
| 1987 | 7 | — | #5,742 |
| 1986 | 7 | — | #5,587 |
| 1985 | 5 | — | #6,991 |
| 1982 | 6 | — | #5,961 |
| 1979 | 7 | — | #5,066 |
| 1978 | 6 | — | #5,361 |
| 1977 | 6 | — | #5,431 |
| 1974 | 5 | — | #5,562 |
| 1972 | 5 | — | #5,307 |
| 1970 | 5 | — | #5,047 |
| 1967 | 5 | — | #4,230 |
| 1965 | 8 | — | #3,101 |
| 1964 | 16 | — | #2,070 |