How Many People Are Named Dillen?
An estimated 735 people in the United States have the first name Dillen. It is predominantly male (92.5%). The average bearer is 23 years old, and Dillen peaked in popularity in 2003 with 59 births that year.
Below you will find a full statistical profile of Dillen 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 Dillen paired with any surname.
Estimated Living Americans
735
About 1 in 466,332 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
92.5% confidence
Average Age
23
years old
Peak Year
2003
59 births
Total Registered
747
since 1880
Gender Distribution for Dillen
Dillen is predominantly male (92.5%), though 56 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Dillen as a male name
Ranked #12,686 in 2023
5 male births in 2023
Peak: 2003 (40 births)
Dillen as a female name
Ranked #18,395 in 2007
5 female births in 2007
Peak: 2003 (19 births)
Dillen: Popularity Over Time
SSA records for Dillen span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2000s, when 362 babies were registered. Dillen has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Dillen by Decade
How has Dillen 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.
Dillen by State
Birth registrations for Dillen span all 4 states and territories in the SSA database. The highest counts are in California, Indiana, Ohio. The lowest are in Texas, Ohio, Indiana. On average, about 10 Dillens were registered per state.
Dillen + Last Name Combinations
How many people share a full name with Dillen as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Dillen
Other first names starting with D with a similar number of bearers.
Dillen: Questions and Answers
How many people in the U.S. are named Dillen?
We estimate approximately 735 people named Dillen 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 466,332 Americans share this first name.
Is Dillen a common name?
Dillen is classified as "Very Rare" and is more popular than 87.9% of all first names in the SSA database. A total of 747 births have been registered with this name since 1880.
When was Dillen most popular?
Dillen reached peak popularity in 2003, when 59 babies were given this name. The average age of a living person named Dillen is approximately 23 years old, reflecting when the name was most commonly given.
Is Dillen a male name?
Dillen is predominantly male. 92.5% of people with this name are male. See the gender breakdown above for full details.
How many Dillen Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Dillen Smith, Dillen Johnson, Dillen 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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