How Many People Are Named Lenni?
An estimated 308 people in the United States have the first name Lenni. It is predominantly female (94.9%). The average bearer is 7 years old, and Lenni peaked in popularity in 2023 with 52 births that year.
Below you will find a full statistical profile of Lenni as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Lenni paired with any surname.
Estimated Living Americans
308
About 1 in 1,112,839 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
94.9% confidence
Average Age
7
years old
Peak Year
2023
52 births
Total Registered
311
since 1880
Gender Distribution for Lenni
Lenni is predominantly female (94.9%), though 16 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Lenni as a male name
Ranked #11,743 in 2024
6 male births in 2024
Peak: 2024 (6 births)
Lenni as a female name
Ranked #3,463 in 2024
45 female births in 2024
Peak: 2023 (52 births)
Lenni: Popularity Over Time
SSA records for Lenni span from the 1960s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2020s, when 199 babies were registered. Lenni remains highly popular today, with recent registration numbers near its historical peak.
Lenni by Decade
How has Lenni tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Lenni by State
Birth registrations for Lenni span all 5 states and territories in the SSA database. The highest counts are in Minnesota, Florida, Michigan. The lowest are in Texas, Pennsylvania, Michigan. On average, about 5 Lennis were registered per state.
Lenni + Last Name Combinations
How many people share a full name with Lenni as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lenni
Other first names starting with L with a similar number of bearers.
Lenni: Questions and Answers
How many people in the U.S. are named Lenni?
We estimate approximately 308 people named Lenni are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 1,112,839 Americans share this first name.
Is Lenni a common name?
Lenni is classified as "Very Rare" and is more popular than 79.5% of all first names in the SSA database. A total of 311 births have been registered with this name since 1880.
When was Lenni most popular?
Lenni reached peak popularity in 2023, when 52 babies were given this name. The average age of a living person named Lenni is approximately 7 years old, reflecting when the name was most commonly given.
Is Lenni a female name?
Lenni is predominantly female. 94.9% of people with this name are female. See the gender breakdown above for full details.
How many Lenni Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lenni Smith, Lenni Johnson, Lenni Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 0 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau estimate. Full methodology.
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