How Many People Are Named Cullin?
An estimated 390 people in the United States have the first name Cullin. It is almost exclusively a male name. The average bearer is 24 years old, and Cullin peaked in popularity in 2000 with 23 births that year.
Below you will find a full statistical profile of Cullin 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 Cullin paired with any surname.
Estimated Living Americans
390
About 1 in 878,857 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
24
years old
Peak Year
2000
23 births
Total Registered
403
since 1880
Gender Distribution for Cullin
Cullin is almost exclusively a male name. Out of 403 total births registered, 100.0% were male.
Cullin as a male name
Ranked #12,418 in 2020
5 male births in 2020
Peak: 2000 (23 births)
Cullin: Popularity Over Time
SSA records for Cullin span from the 1910s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 1990s, when 156 babies were registered. Cullin has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Cullin by Decade
How has Cullin 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.
Cullin + Last Name Combinations
How many people share a full name with Cullin as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cullin
Other first names starting with C with a similar number of bearers.
Cullin: Questions and Answers
How many people in the U.S. are named Cullin?
We estimate approximately 390 people named Cullin 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 878,857 Americans share this first name.
Is Cullin a common name?
Cullin is classified as "Very Rare" and is more popular than 82.1% of all first names in the SSA database. A total of 403 births have been registered with this name since 1880.
When was Cullin most popular?
Cullin reached peak popularity in 2000, when 23 babies were given this name. The average age of a living person named Cullin is approximately 24 years old, reflecting when the name was most commonly given.
Is Cullin a male name?
Cullin is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Cullin Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cullin Smith, Cullin Johnson, Cullin 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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