Jansen is an uncommon boys' name that peaked in 1994 and has grown less common since.
Jansen is predominantly a boy name. In 2025 it ranked #3,404 for boy births in the United States (and #7,337 across all names), given to 34 babies. Jansen first appears in 1958 and peaked in 1994 (88 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 34 | 34 | — | #3,404 |
| 2024 | 45 | 45 | — | #2,848 |
| 2023 | 38 | 38 | — | #3,198 |
| 2022 | 38 | 38 | — | #3,182 |
| 2021 | 41 | 41 | — | #2,997 |
| 2020 | 36 | 36 | — | #3,164 |
| 2019 | 47 | 47 | — | #2,710 |
| 2018 | 47 | 47 | — | #2,647 |
| 2017 | 59 | 59 | — | #2,254 |
| 2016 | 40 | 40 | — | #2,950 |
| 2015 | 52 | 52 | #17,581 | #2,623 |
| 2014 | 47 | 47 | #15,402 | #2,865 |
| 2013 | 45 | 45 | — | #2,638 |
| 2012 | 46 | 46 | #15,771 | #2,926 |
| 2011 | 42 | 42 | — | #2,827 |
| 2010 | 45 | 45 | — | #2,704 |
| 2009 | 40 | 40 | — | #2,970 |
| 2008 | 47 | 47 | #14,473 | #2,975 |
| 2007 | 69 | 69 | #11,163 | #2,246 |
| 2006 | 61 | 61 | #9,550 | #2,491 |
| 2005 | 55 | 55 | #17,575 | #2,346 |
| 2004 | 61 | 61 | #11,082 | #2,223 |
| 2003 | 47 | 47 | #10,785 | #2,644 |
| 2002 | 54 | 54 | #11,543 | #2,271 |
| 2001 | 67 | 67 | #9,677 | #1,920 |
| 2000 | 68 | 68 | #6,618 | #1,980 |
| 1999 | 66 | 66 | #9,086 | #1,787 |
| 1998 | 75 | 75 | #8,226 | #1,630 |
| 1997 | 84 | — | #5,498 | #1,560 |
| 1996 | 71 | — | #6,180 | #1,698 |
| 1995 | 62 | — | #9,063 | #1,690 |
| 1994 | 95 | — | #11,022 | #1,235 |
| 1993 | 48 | — | #9,958 | #2,028 |
| 1992 | 47 | — | — | #1,789 |
| 1991 | 32 | — | #12,101 | #2,637 |
| 1990 | 35 | — | — | #2,103 |
| 1989 | 43 | — | #9,071 | #2,044 |
| 1988 | 30 | — | — | #2,108 |
| 1987 | 24 | — | — | #2,363 |
| 1986 | 27 | — | — | #2,125 |
| 1985 | 38 | — | #8,693 | #1,889 |
| 1984 | 29 | — | — | #1,910 |
| 1983 | 27 | — | #8,375 | #2,447 |
| 1982 | 25 | — | #11,152 | #2,467 |
| 1981 | 27 | — | — | #2,014 |
| 1980 | 26 | — | — | #2,083 |
| 1979 | 18 | — | — | #2,631 |
| 1978 | 18 | — | — | #2,521 |
| 1977 | 21 | — | — | #2,236 |
| 1976 | 8 | — | — | #4,183 |
| 1975 | 10 | — | — | #3,531 |
| 1974 | 5 | — | — | #5,561 |
| 1973 | 11 | — | — | #3,108 |
| 1972 | 11 | — | — | #3,052 |
| 1971 | 6 | — | — | #4,635 |
| 1970 | 6 | — | — | #4,469 |
| 1969 | 10 | — | — | #2,948 |
| 1966 | 5 | — | — | #4,215 |
| 1965 | 10 | — | — | #2,684 |
| 1964 | 7 | — | — | #3,432 |
| 1961 | 5 | — | — | #4,335 |
| 1958 | 5 | — | — | #4,207 |