How Many People Are Named Llewelyn?
An estimated 130 people in the United States have the first name Llewelyn. It is predominantly male (94.1%). The average bearer is 22 years old, and Llewelyn peaked in popularity in 2024 with 23 births that year.
Below you will find a full statistical profile of Llewelyn 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 Llewelyn paired with any surname.
Estimated Living Americans
130
About 1 in 2,636,572 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
94.1% confidence
Average Age
22
years old
Peak Year
2024
23 births
Total Registered
170
since 1880
Gender Distribution for Llewelyn
Llewelyn is predominantly male (94.1%), though 10 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Llewelyn as a male name
Ranked #4,495 in 2024
23 male births in 2024
Peak: 2024 (23 births)
Llewelyn as a female name
Ranked #16,528 in 2020
5 female births in 2020
Peak: 2017 (5 births)
Llewelyn: Popularity Over Time
SSA records for Llewelyn span from the 1910s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 2020s, when 70 babies were registered. Llewelyn remains highly popular today, with recent registration numbers near its historical peak.
Llewelyn by Decade
How has Llewelyn 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.
Llewelyn + Last Name Combinations
How many people share a full name with Llewelyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Llewelyn
Other first names starting with L with a similar number of bearers.
Llewelyn: Questions and Answers
How many people in the U.S. are named Llewelyn?
We estimate approximately 130 people named Llewelyn 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 2,636,572 Americans share this first name.
Is Llewelyn a common name?
Llewelyn is classified as "Very Rare" and is more popular than 68.3% of all first names in the SSA database. A total of 170 births have been registered with this name since 1880.
When was Llewelyn most popular?
Llewelyn reached peak popularity in 2024, when 23 babies were given this name. The average age of a living person named Llewelyn is approximately 22 years old, reflecting when the name was most commonly given.
Is Llewelyn a male name?
Llewelyn is predominantly male. 94.1% of people with this name are male. See the gender breakdown above for full details.
How many Llewelyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Llewelyn Smith, Llewelyn Johnson, Llewelyn 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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