Recorded 1898–2013 · United States
Lennis was most popular in 1947, when 51 American babies were given the name — ranking #2,186 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 1,754 people named Lennis.
Across the whole record Lennis is a unisex name — 30.6% of the 1,754 Americans given it were girls and 69.4% were boys. It changed hands: since 1947 it has gone mainly to boys, having gone mainly to girls before that.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
How much more common the name is in each state than across the country as a whole.
See Lennis on the interactive charts
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org