How Many People Are Named Dilyn?
An estimated 533 people in the United States have the first name Dilyn. It is used for both genders, with 57.4% male. The average bearer is 20 years old, and Dilyn peaked in popularity in 2003 with 46 births that year.
Below you will find a full statistical profile of Dilyn 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 Dilyn paired with any surname.
Key Insights
- Dilyn has undergone a significant gender shift. Originally given predominantly to boys, it is now more commonly a girls' name.
Estimated Living Americans
533
About 1 in 643,066 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
57.4% confidence
Average Age
20
years old
Peak Year
2003
46 births
Total Registered
540
since 1880
Gender Distribution for Dilyn
Dilyn is a genuinely unisex name, used for both males (57.4%) and females (42.6%). Out of 540 total births registered, 310 were male and 230 were female.
Dilyn as a male name
Ranked #11,125 in 2018
6 male births in 2018
Peak: 2001 (25 births)
Dilyn as a female name
Ranked #13,893 in 2024
6 female births in 2024
Peak: 2003 (24 births)
Dilyn: Popularity Over Time
SSA records for Dilyn span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2000s, when 278 babies were registered. Dilyn has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Dilyn by Decade
How has Dilyn 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.
Dilyn + Last Name Combinations
How many people share a full name with Dilyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Dilyn
Other first names starting with D with a similar number of bearers.
Dilyn: Questions and Answers
How many people in the U.S. are named Dilyn?
We estimate approximately 533 people named Dilyn 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 643,066 Americans share this first name.
Is Dilyn a common name?
Dilyn is classified as "Very Rare" and is more popular than 85.1% of all first names in the SSA database. A total of 540 births have been registered with this name since 1880.
When was Dilyn most popular?
Dilyn reached peak popularity in 2003, when 46 babies were given this name. The average age of a living person named Dilyn is approximately 20 years old, reflecting when the name was most commonly given.
Is Dilyn a male name?
Dilyn is predominantly male. 57.4% of people with this name are male. See the gender breakdown above for full details.
How many Dilyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Dilyn Smith, Dilyn Johnson, Dilyn 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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