In 2025, 86 US boys were named Lonnie, making it the 1,843rd most common boys’ name of the year, down 29 places from #1,814 in 2024. That is 4 fewer than the 90 boys named Lonnie in 2024. Its best rank for boys was #114, reached in 1901. The most boys given the name in a single year was 2,086, in 1947. For comparison, it was #1,411 in 2015 and #135 in 1950.
In 2025, 23 US girls were named Lonnie, making it the 5,494th most common girls’ name of the year, down 113 places from #5,381 in 2024. That is 1 fewer than the 24 girls named Lonnie in 2024. Its best rank for girls was #482, reached in 1880. The most girls given the name in a single year was 151, in 1947. For comparison, it was #9,278 in 2015 and #752 in 1950.
Social Security card records list Lonnie in every one of the 146 years from 1880 to 2025; in 1880 there were 66 babies with the name. In all, 101,481 US babies have been given the name, 6.9% of them girls and 93% boys. Its busiest decade was the 1950s, with 20,347 babies named Lonnie.
Over the 10 years from 2016 to 2025, 941 US boys were named Lonnie; the busiest of those years was 2016, with 115. In 2025 that was about 1 in 19,861 of the boys in SSA’s list for the year.
Among the states, Lonnie ranked highest in Arkansas in 2025, at #606 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Lon (9,856 babies since 1880), Lonny (6,413 babies since 1880), Loni (3,878 babies since 1880) and Lonie (2,755 babies since 1880). Rarer spellings such as Lonni, Lonney and Lonia are summarised on this page.