Lennyn
The girl's name Lennyn has been in the national records since 2001, with 930 births to its name. In 2025 it ranked 1,548th. About 930 Lennyns are alive in the United States today, and half of them are over 4.
Popularity, 1880–2025
girls named Lennyn boys named Lennyn
Girls and boys called Lennyn
years more girls than boys years more boys than girls
Both, throughout, without either side ever taking it over: 809 girls and 121 boys in all, and in 2025 the split was 136 to 6.
The girls’ share of each year’s babies of the name, in the 11 years in which at least 25 babies got it. The line touches the middle more often than there are crossings marked: a year or two on the other side is not a name changing hands, and only a move that holds for 5 counted years and reaches 60/40 is recorded as one. All 581 names that changed sex.
By the numbers
- Total US births
- 930
- Estimated living today
- 930
- Median age today
- 4
- Peak year
- 2025
- Best rank
- 1,548th
- Rank in 2025
- 1,548th
- First recorded
- 2001
- Girls / boys
- 809 / 121
How old the living Lennyns are
born that year still alive today
Of the 930 babies given the name since 2001, about 930 are alive — 99 in every hundred. Roughly 900 of them are children and 0 are 65 or over. The dotted line is the median: half were born before 2021 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Where Lennyn is most common
Relative to how many babies each state records, Lennyn is most concentrated in Utah (12.0×), Iowa (6.8×), Wisconsin (5.0×), Michigan (3.4×).
Total births recorded in each state since 1910. Browse names by state.
Names of 2025
The most popular girls’ names the year Lennyn peaked:
Related names
Lennyn against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.