Lennon is an established name used for both girls and boys that has climbed to its highest level yet, peaking in 2022.
Lennon is predominantly a girl name. In 2025 it ranked #214 among girls (1,421) and #808 among boys (308) — overall #397 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 1,729 | 1,729 | #214 | #808 |
| 2024 | 1,640 | 1,640 | #235 | #786 |
| 2023 | 1,603 | 1,603 | #243 | #756 |
| 2022 | 1,730 | 1,730 | #228 | #663 |
| 2021 | 1,679 | 1,679 | #238 | #673 |
| 2020 | 1,447 | 1,447 | #299 | #691 |
| 2019 | 1,146 | 1,146 | #388 | #712 |
| 2018 | 1,097 | 1,097 | #436 | #677 |
| 2017 | 1,091 | 1,091 | #445 | #667 |
| 2016 | 1,105 | 1,105 | #479 | #596 |
| 2015 | 1,048 | 1,048 | #518 | #609 |
| 2014 | 763 | 763 | #697 | #695 |
| 2013 | 567 | 567 | #932 | #769 |
| 2012 | 405 | 405 | #1,619 | #816 |
| 2011 | 419 | 419 | #1,764 | #747 |
| 2010 | 302 | 302 | #2,355 | #916 |
| 2009 | 274 | 274 | #2,817 | #955 |
| 2008 | 265 | 265 | #2,765 | #990 |
| 2007 | 224 | 224 | #3,635 | #1,052 |
| 2006 | 167 | 167 | #4,217 | #1,269 |
| 2005 | 127 | 127 | #5,535 | #1,427 |
| 2004 | 128 | 128 | #4,559 | #1,438 |
| 2003 | 114 | 114 | #7,429 | #1,370 |
| 2002 | 107 | 107 | #3,938 | #1,629 |
| 2001 | 95 | 95 | #6,830 | #1,536 |
| 2000 | 54 | 54 | #12,568 | #2,159 |
| 1999 | 45 | 45 | #13,655 | #2,320 |
| 1998 | 32 | 32 | #10,691 | #3,253 |
| 1997 | 54 | — | #8,743 | #2,049 |
| 1996 | 48 | — | #11,270 | #2,097 |
| 1995 | 47 | — | #11,217 | #2,075 |
| 1994 | 25 | — | #14,737 | #3,411 |
| 1993 | 30 | — | — | #2,488 |
| 1992 | 26 | — | #14,538 | #3,171 |
| 1991 | 30 | — | #14,413 | #2,723 |
| 1990 | 17 | — | — | #3,545 |
| 1989 | 16 | — | — | #3,542 |
| 1988 | 25 | — | — | #2,408 |
| 1987 | 23 | — | — | #2,432 |
| 1986 | 28 | — | #11,959 | #2,398 |
| 1985 | 17 | — | — | #2,899 |
| 1984 | 26 | — | — | #2,075 |
| 1983 | 22 | — | — | #2,312 |
| 1982 | 22 | — | — | #2,310 |
| 1981 | 54 | — | #9,796 | #1,365 |
| 1980 | 15 | — | — | #3,040 |
| 1979 | 9 | — | — | #4,261 |
| 1978 | 15 | — | — | #2,870 |
| 1977 | 10 | — | — | #3,747 |
| 1976 | 12 | — | — | #3,181 |
| 1975 | 11 | — | — | #3,348 |
| 1974 | 12 | — | — | #3,058 |
| 1973 | 13 | — | — | #2,802 |
| 1972 | 14 | — | — | #2,607 |
| 1971 | 13 | — | — | #2,757 |
| 1970 | 12 | — | — | #2,815 |
| 1969 | 21 | — | — | #1,841 |
| 1968 | 20 | — | — | #1,810 |
| 1967 | 16 | — | — | #2,003 |
| 1966 | 6 | — | — | #3,756 |
| 1965 | 18 | — | — | #1,894 |
| 1964 | 8 | — | — | #3,176 |
| 1963 | 10 | — | — | #2,784 |
| 1962 | 8 | — | — | #3,188 |
| 1961 | 12 | — | — | #2,486 |
| 1960 | 15 | — | — | #2,170 |
| 1959 | 6 | — | — | #3,835 |
| 1958 | 12 | — | — | #2,448 |
| 1957 | 12 | — | — | #2,439 |
| 1956 | 13 | — | — | #2,330 |
| 1955 | 17 | — | — | #1,942 |
| 1954 | 16 | — | — | #2,011 |
| 1953 | 10 | — | — | #2,637 |
| 1952 | 13 | — | — | #2,215 |
| 1951 | 14 | — | — | #2,105 |
| 1950 | 11 | — | — | #2,383 |
| 1949 | 14 | — | — | #2,076 |
| 1948 | 13 | — | — | #2,177 |
| 1947 | 11 | — | — | #2,443 |
| 1946 | 15 | — | — | #1,924 |
| 1945 | 8 | — | — | #2,668 |
| 1944 | 11 | — | — | #2,262 |
| 1943 | 10 | — | — | #2,485 |
| 1942 | 9 | — | — | #2,625 |
| 1941 | 10 | — | — | #2,423 |
| 1940 | 9 | — | — | #2,593 |
| 1938 | 14 | — | — | #1,942 |
| 1937 | 8 | — | — | #2,799 |
| 1936 | 9 | — | — | #2,548 |
| 1935 | 10 | — | — | #2,473 |
| 1933 | 9 | — | — | #2,649 |
| 1932 | 5 | — | — | #4,067 |
| 1930 | 9 | — | — | #2,904 |
| 1929 | 9 | — | — | #2,867 |
| 1928 | 7 | — | — | #3,560 |
| 1927 | 6 | — | — | #4,004 |
| 1926 | 5 | — | — | #4,551 |
| 1925 | 12 | — | — | #2,526 |
| 1924 | 12 | — | — | #2,563 |
| 1922 | 12 | — | — | #2,572 |
| 1921 | 5 | — | — | #4,693 |
| 1920 | 9 | — | — | #3,093 |
| 1919 | 8 | — | — | #3,269 |
| 1918 | 8 | — | — | #3,261 |
| 1913 | 5 | — | — | #3,068 |