Lonni is a rare variant of Lona that peaked in 1956 and has grown less common since.
Lonni is predominantly a girl name. It last appears in U.S. records in 2024. Lonni was first reported in SSA data in 1944 and peaked in 1959 (17 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2024 | 9 | 9 | #10,752 | — |
| 2023 | 5 | 5 | #16,624 | — |
| 2020 | 5 | 5 | #16,546 | — |
| 2019 | 5 | 5 | #17,027 | — |
| 2017 | 7 | 7 | #13,539 | — |
| 2003 | 5 | 5 | #17,293 | — |
| 1992 | 7 | — | #11,183 | — |
| 1990 | 5 | — | #14,267 | — |
| 1989 | 5 | — | #13,622 | — |
| 1988 | 9 | — | #8,110 | — |
| 1987 | 5 | — | #12,413 | — |
| 1986 | 6 | — | #10,286 | — |
| 1983 | 11 | — | #6,042 | — |
| 1982 | 7 | — | #8,780 | — |
| 1981 | 12 | — | #5,763 | — |
| 1980 | 14 | — | #5,121 | — |
| 1979 | 8 | — | #7,706 | — |
| 1978 | 6 | — | #9,212 | — |
| 1976 | 8 | — | #6,988 | — |
| 1975 | 5 | — | #9,914 | — |
| 1974 | 8 | — | #6,584 | — |
| 1973 | 8 | — | #6,405 | — |
| 1972 | 10 | — | #5,300 | — |
| 1971 | 6 | — | #7,908 | — |
| 1970 | 10 | — | #5,263 | — |
| 1969 | 11 | — | #4,603 | — |
| 1967 | 6 | — | #6,466 | — |
| 1966 | 9 | — | #4,705 | — |
| 1965 | 18 | — | #4,090 | #3,430 |
| 1964 | 14 | — | #5,786 | #3,479 |
| 1963 | 5 | — | #7,184 | — |
| 1962 | 8 | — | #5,121 | — |
| 1961 | 9 | — | #4,735 | — |
| 1960 | 11 | — | #4,067 | — |
| 1959 | 17 | — | #2,934 | — |
| 1958 | 16 | — | #3,031 | — |
| 1957 | 8 | — | #4,747 | — |
| 1956 | 18 | — | #3,432 | #4,258 |
| 1955 | 13 | — | #3,309 | — |
| 1954 | 12 | — | #3,417 | — |
| 1953 | 8 | — | #4,432 | — |
| 1952 | 9 | — | #3,991 | — |
| 1951 | 5 | — | #5,853 | — |
| 1950 | 10 | — | #3,575 | — |
| 1949 | 5 | — | #5,681 | — |
| 1948 | 10 | — | #3,491 | — |
| 1947 | 5 | — | #5,756 | — |
| 1946 | 5 | — | #5,375 | — |
| 1945 | 6 | — | #4,312 | — |
| 1944 | 7 | — | #3,915 | — |