How Many People Are Named Lain?
An estimated 490 people in the United States have the first name Lain. It is predominantly male (94.6%). The average bearer is 17 years old, and Lain peaked in popularity in 2004 with 26 births that year.
Below you will find a full statistical profile of Lain 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 Lain paired with any surname.
Estimated Living Americans
490
About 1 in 699,499 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
94.6% confidence
Average Age
17
years old
Peak Year
2004
26 births
Total Registered
496
since 1880
Gender Distribution for Lain
Lain is predominantly male (94.6%), though 27 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Lain as a male name
Ranked #7,505 in 2024
11 male births in 2024
Peak: 2011 (25 births)
Lain as a female name
Ranked #12,853 in 2023
7 female births in 2023
Peak: 2004 (8 births)
Lain: Popularity Over Time
SSA records for Lain span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 174 babies were registered. While Lain is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Lain by Decade
How has Lain 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.
Lain by State
Lain + Last Name Combinations
How many people share a full name with Lain as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Lain
Other first names starting with L with a similar number of bearers.
Lain: Questions and Answers
How many people in the U.S. are named Lain?
We estimate approximately 490 people named Lain 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 699,499 Americans share this first name.
Is Lain a common name?
Lain is classified as "Very Rare" and is more popular than 84.4% of all first names in the SSA database. A total of 496 births have been registered with this name since 1880.
When was Lain most popular?
Lain reached peak popularity in 2004, when 26 babies were given this name. The average age of a living person named Lain is approximately 17 years old, reflecting when the name was most commonly given.
Is Lain a male name?
Lain is predominantly male. 94.6% of people with this name are male. See the gender breakdown above for full details.
How many Lain Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Lain Smith, Lain Johnson, Lain 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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