The baby name Lenny appears in baby name data for the United States from 1923 to 2024. It was most popular in 1960 with 181 babies given the name.
In the later years of this period, Lenny has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1923 | 6 |
| 1936 | 5 |
| 1937 | 7 |
| 1938 | 8 |
| 1939 | 7 |
| 1940 | 12 |
| 1941 | 6 |
| 1942 | 11 |
| 1943 | 18 |
| 1944 | 8 |
| 1945 | 9 |
| 1946 | 31 |
| 1947 | 37 |
| 1948 | 59 |
| 1949 | 12 |
| 1950 | 12 |
| 1951 | 8 |
| 1952 | 17 |
| 1953 | 31 |
| 1954 | 29 |
| 1955 | 52 |
| 1956 | 65 |
| 1957 | 88 |
| 1958 | 95 |
| 1959 | 108 |
| 1960 | 181 |
| 1961 | 127 |
| 1962 | 128 |
| 1963 | 103 |
| 1964 | 106 |
| 1965 | 80 |
| 1966 | 73 |
| 1967 | 84 |
| 1968 | 35 |
| 1969 | 48 |
| 1970 | 63 |
| 1971 | 64 |
| 1972 | 47 |
| 1973 | 34 |
| 1974 | 43 |
| 1975 | 77 |
| 1976 | 103 |
| 1977 | 27 |
| 1978 | 79 |
| 1979 | 98 |
| 1980 | 60 |
| 1981 | 32 |
| 1982 | 50 |
| 1983 | 35 |
| 1984 | 12 |
| 1985 | 36 |
| 1986 | 31 |
| 1987 | 27 |
| 1988 | 20 |
| 1989 | 12 |
| 1990 | 12 |
| 1991 | 26 |
| 1992 | 8 |
| 1993 | 29 |
| 1994 | 17 |
| 1995 | 19 |
| 1996 | 14 |
| 1997 | 6 |
| 1998 | 38 |
| 1999 | 10 |
| 2000 | 29 |
| 2001 | 22 |
| 2002 | 38 |
| 2003 | 22 |
| 2004 | 47 |
| 2005 | 52 |
| 2006 | 77 |
| 2007 | 48 |
| 2008 | 60 |
| 2009 | 55 |
| 2010 | 97 |
| 2011 | 102 |
| 2012 | 87 |
| 2013 | 82 |
| 2014 | 57 |
| 2015 | 148 |
| 2016 | 118 |
| 2017 | 5 |
| 2017 | 93 |
| 2018 | 45 |
| 2019 | 59 |
| 2020 | 40 |
| 2021 | 67 |
| 2022 | 10 |
| 2022 | 70 |
| 2023 | 6 |
| 2023 | 92 |
| 2024 | 15 |
| 2024 | 68 |