How Many People Are Named Quillian?
An estimated 16 people in the United States have the first name Quillian. It is almost exclusively a male name. The average bearer is 38 years old, and Quillian peaked in popularity in 2019 with 8 births that year.
Below you will find a full statistical profile of Quillian 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 Quillian paired with any surname.
Key Insights
- Quillian is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
16
About 1 in 21,422,146 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
38
years old
Peak Year
2019
8 births
Total Registered
39
since 1880
Gender Distribution for Quillian
Quillian is almost exclusively a male name. Out of 39 total births registered, 100.0% were male.
Quillian as a male name
Ranked #9,535 in 2019
8 male births in 2019
Peak: 2019 (8 births)
Quillian: Popularity Over Time
SSA records for Quillian span from the 1910s to the 2010s, covering 5 decades of naming data. The most popular decade for this name was the 1920s, when 15 babies were registered. While Quillian is less common than at its peak in the 1920s, it remains a well-established name with steady registrations.
Quillian by Decade
How has Quillian 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.
Quillian + Last Name Combinations
How many people share a full name with Quillian as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Quillian
Other first names starting with Q with a similar number of bearers.
Quillian: Questions and Answers
How many people in the U.S. are named Quillian?
We estimate approximately 16 people named Quillian 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 21,422,146 Americans share this first name.
Is Quillian a common name?
Quillian is classified as "Very Rare" and is more popular than 36.5% of all first names in the SSA database. A total of 39 births have been registered with this name since 1880.
When was Quillian most popular?
Quillian reached peak popularity in 2019, when 8 babies were given this name. The average age of a living person named Quillian is approximately 38 years old, reflecting when the name was most commonly given.
Is Quillian a male name?
Quillian is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Quillian Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Quillian Smith, Quillian Johnson, Quillian 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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