How Many People Are Named Lennan?
An estimated 144 people in the United States have the first name Lennan. It is predominantly female (96.6%). The average bearer is 8 years old, and Lennan peaked in popularity in 2016 with 25 births that year.
Below you will find a full statistical profile of Lennan 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 Lennan paired with any surname.
Estimated Living Americans
144
About 1 in 2,380,238 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
96.6% confidence
Average Age
8
years old
Peak Year
2016
25 births
Total Registered
145
since 1880
Gender Distribution for Lennan
Lennan is predominantly female (96.6%), though 5 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Lennan as a male name
Ranked #13,368 in 2023
5 male births in 2023
Peak: 2023 (5 births)
Lennan as a female name
Ranked #9,265 in 2024
11 female births in 2024
Peak: 2016 (25 births)
Lennan: Popularity Over Time
SSA records for Lennan span from the 2010s to the 2020s, covering 2 decades of naming data. The most popular decade for this name was the 2010s, when 93 babies were registered. While Lennan is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Lennan by Decade
How has Lennan 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.
Lennan by State
Lennan + Last Name Combinations
How many people share a full name with Lennan as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lennan
Other first names starting with L with a similar number of bearers.
Lennan: Questions and Answers
How many people in the U.S. are named Lennan?
We estimate approximately 144 people named Lennan 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 2,380,238 Americans share this first name.
Is Lennan a common name?
Lennan is classified as "Very Rare" and is more popular than 69.7% of all first names in the SSA database. A total of 145 births have been registered with this name since 1880.
When was Lennan most popular?
Lennan reached peak popularity in 2016, when 25 babies were given this name. The average age of a living person named Lennan is approximately 8 years old, reflecting when the name was most commonly given.
Is Lennan a female name?
Lennan is predominantly female. 96.6% of people with this name are female. See the gender breakdown above for full details.
How many Lennan Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lennan Smith, Lennan Johnson, Lennan 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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