How Many People Are Named Len?
An estimated 2,868 people in the United States have the first name Len. It is predominantly male (97.8%). The average bearer is 59 years old, and Len peaked in popularity in 1958 with 125 births that year.
Below you will find a full statistical profile of Len 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 Len paired with any surname.
Key Insights
- While Len is overwhelmingly male, 102 female births have been registered with this name since 1880.
Estimated Living Americans
2,868
About 1 in 119,510 people in the U.S.
Rarity
Rare
Predicted Gender
Male
97.8% confidence
Average Age
59
years old
Peak Year
1958
125 births
Total Registered
4,608
since 1880
Gender Distribution for Len
Len is predominantly male (97.8%), though 102 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Len as a male name
Ranked #9,482 in 2024
8 male births in 2024
Peak: 1960 (121 births)
Len as a female name
Ranked #8,994 in 1972
5 female births in 1972
Peak: 1964 (10 births)
Len: Popularity Over Time
SSA records for Len span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1960s, when 926 babies were registered. Len has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Len by Decade
How has Len 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.
Len by State
Birth registrations for Len span all 23 states and territories in the SSA database. The highest counts are in California, Texas, Illinois. The lowest are in Wisconsin, Tennessee, Hawaii. On average, about 43 Lens were registered per state.
Len + Last Name Combinations
How many people share a full name with Len as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Len
Other first names starting with L with a similar number of bearers.
Len: Questions and Answers
How many people in the U.S. are named Len?
We estimate approximately 2,868 people named Len 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 119,510 Americans share this first name.
Is Len a common name?
Len is classified as "Rare" and is more popular than 95% of all first names in the SSA database. A total of 4,608 births have been registered with this name since 1880.
When was Len most popular?
Len reached peak popularity in 1958, when 125 babies were given this name. The average age of a living person named Len is approximately 59 years old, reflecting when the name was most commonly given.
Is Len a male name?
Len is predominantly male. 97.8% of people with this name are male. See the gender breakdown above for full details.
How many Len Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Len Smith, Len Johnson, Len 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 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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