Lon is an uncommon boys' name that peaked in 1948 and has since faded.
Lon is predominantly a boy name. It last appears in U.S. records in 2022. Lon was first reported in SSA data in 1880 and peaked in 1948 (274 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2022 | 5 | 5 | — | #13,559 |
| 2021 | 5 | 5 | — | #13,319 |
| 2020 | 6 | 6 | — | #11,443 |
| 2019 | 6 | 6 | — | #11,610 |
| 2018 | 7 | 7 | — | #10,327 |
| 2016 | 10 | 10 | — | #7,931 |
| 2015 | 8 | 8 | — | #9,242 |
| 2014 | 6 | 6 | — | #11,591 |
| 2012 | 9 | 9 | — | #8,598 |
| 2011 | 5 | 5 | — | #13,558 |
| 2009 | 6 | 6 | — | #11,896 |
| 2008 | 9 | 9 | — | #8,738 |
| 2007 | 5 | 5 | — | #13,609 |
| 2006 | 9 | 9 | — | #8,469 |
| 2004 | 7 | 7 | — | #9,556 |
| 2002 | 15 | 15 | — | #5,053 |
| 2001 | 14 | 14 | — | #5,304 |
| 2000 | 13 | 13 | — | #5,477 |
| 1998 | 17 | 17 | — | #4,124 |
| 1997 | 8 | — | — | #7,015 |
| 1996 | 19 | — | — | #3,626 |
| 1995 | 11 | — | — | #5,371 |
| 1994 | 10 | — | — | #5,729 |
| 1993 | 11 | — | — | #5,230 |
| 1992 | 17 | — | — | #3,685 |
| 1991 | 15 | — | — | #3,943 |
| 1990 | 40 | — | — | #1,926 |
| 1989 | 31 | — | — | #2,231 |
| 1988 | 26 | — | — | #2,338 |
| 1987 | 22 | — | — | #2,523 |
| 1986 | 27 | — | — | #2,139 |
| 1985 | 37 | — | — | #1,688 |
| 1984 | 42 | — | — | #1,495 |
| 1983 | 44 | — | — | #1,441 |
| 1982 | 35 | — | — | #1,691 |
| 1981 | 46 | — | — | #1,405 |
| 1980 | 57 | — | — | #1,222 |
| 1979 | 51 | — | — | #1,296 |
| 1978 | 65 | — | — | #1,083 |
| 1977 | 69 | — | — | #1,044 |
| 1976 | 67 | — | — | #1,017 |
| 1975 | 73 | — | — | #962 |
| 1974 | 85 | — | — | #875 |
| 1973 | 93 | — | — | #827 |
| 1972 | 99 | — | — | #807 |
| 1971 | 146 | — | — | #686 |
| 1970 | 150 | — | — | #670 |
| 1969 | 129 | — | — | #700 |
| 1968 | 163 | — | #7,664 | #607 |
| 1967 | 161 | — | — | #594 |
| 1966 | 141 | — | — | #623 |
| 1965 | 154 | — | — | #617 |
| 1964 | 198 | — | — | #562 |
| 1963 | 176 | — | — | #593 |
| 1962 | 193 | — | — | #568 |
| 1961 | 193 | — | — | #566 |
| 1960 | 225 | — | #6,912 | #534 |
| 1959 | 247 | — | #6,811 | #504 |
| 1958 | 229 | — | — | #509 |
| 1957 | 235 | — | — | #506 |
| 1956 | 234 | — | — | #496 |
| 1955 | 252 | — | — | #467 |
| 1954 | 229 | — | — | #478 |
| 1953 | 260 | — | — | #444 |
| 1952 | 242 | — | — | #454 |
| 1951 | 238 | — | — | #440 |
| 1950 | 235 | — | — | #434 |
| 1949 | 228 | — | — | #443 |
| 1948 | 274 | — | — | #411 |
| 1947 | 271 | — | — | #415 |
| 1946 | 146 | — | — | #532 |
| 1945 | 112 | — | — | #573 |
| 1944 | 91 | — | — | #654 |
| 1943 | 81 | — | — | #717 |
| 1942 | 82 | — | — | #711 |
| 1941 | 77 | — | — | #707 |
| 1940 | 90 | — | — | #629 |
| 1939 | 73 | — | — | #697 |
| 1938 | 60 | — | — | #803 |
| 1937 | 79 | — | — | #671 |
| 1936 | 69 | — | — | #724 |
| 1935 | 56 | — | — | #840 |
| 1934 | 62 | — | — | #789 |
| 1933 | 56 | — | — | #832 |
| 1932 | 67 | — | — | #776 |
| 1931 | 53 | — | — | #883 |
| 1930 | 73 | — | — | #748 |
| 1929 | 58 | — | — | #875 |
| 1928 | 61 | — | — | #851 |
| 1927 | 70 | — | — | #793 |
| 1926 | 73 | — | — | #754 |
| 1925 | 59 | — | — | #876 |
| 1924 | 75 | — | #5,531 | #812 |
| 1923 | 79 | — | — | #735 |
| 1922 | 58 | — | — | #921 |
| 1921 | 90 | — | — | #686 |
| 1920 | 46 | — | — | #1,027 |
| 1919 | 47 | — | — | #995 |
| 1918 | 69 | — | — | #787 |
| 1917 | 56 | — | — | #858 |
| 1916 | 55 | — | — | #850 |
| 1915 | 54 | — | — | #838 |
| 1914 | 47 | — | — | #773 |
| 1913 | 41 | — | — | #730 |
| 1912 | 24 | — | — | #927 |
| 1911 | 13 | — | — | #960 |
| 1910 | 14 | — | — | #843 |
| 1909 | 9 | — | — | #1,055 |
| 1908 | 16 | — | — | #673 |
| 1907 | 10 | — | — | #910 |
| 1906 | 15 | — | — | #632 |
| 1905 | 9 | — | — | #884 |
| 1904 | 15 | — | — | #603 |
| 1903 | 23 | — | — | #424 |
| 1902 | 26 | — | — | #399 |
| 1901 | 13 | — | — | #577 |
| 1900 | 34 | — | — | #383 |
| 1899 | 14 | — | — | #536 |
| 1898 | 23 | — | — | #413 |
| 1897 | 33 | — | — | #326 |
| 1896 | 38 | — | — | #304 |
| 1895 | 31 | — | — | #334 |
| 1894 | 25 | — | — | #373 |
| 1893 | 33 | — | — | #304 |
| 1892 | 42 | — | — | #281 |
| 1891 | 29 | — | — | #314 |
| 1890 | 46 | — | — | #250 |
| 1889 | 43 | — | — | #250 |
| 1888 | 55 | — | — | #236 |
| 1887 | 49 | — | — | #225 |
| 1886 | 58 | — | — | #223 |
| 1885 | 38 | — | — | #270 |
| 1884 | 54 | — | — | #232 |
| 1883 | 51 | — | — | #214 |
| 1882 | 52 | — | — | #229 |
| 1881 | 27 | — | — | #316 |
| 1880 | 64 | — | — | #193 |