How Many People Are Named Cullen?
An estimated 15,217 people in the United States have the first name Cullen. It is predominantly male (99.4%). The average bearer is 23 years old, and Cullen peaked in popularity in 2010 with 685 births that year.
Below you will find a full statistical profile of Cullen 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 Cullen paired with any surname.
Key Insights
- While Cullen is overwhelmingly male, 106 female births have been registered with this name since 1880.
Estimated Living Americans
15,217
About 1 in 22,524 people in the U.S.
Rarity
Uncommon
Predicted Gender
Male
99.4% confidence
Average Age
23
years old
Peak Year
2010
685 births
Total Registered
16,500
since 1880
Gender Distribution for Cullen
Cullen is almost exclusively a male name. Out of 16,500 total births registered, 99.4% were male.
Cullen as a male name
Ranked #1,129 in 2024
187 male births in 2024
Peak: 2010 (679 births)
Cullen as a female name
Ranked #17,043 in 2015
5 female births in 2015
Peak: 2012 (8 births)
Cullen: Popularity Over Time
SSA records for Cullen span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 5,104 babies were registered. Cullen has declined significantly from its peak in the 2010s. Recent registrations are a fraction of what they were at the name's height.
Cullen by Decade
How has Cullen 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.
Cullen by State
Birth registrations for Cullen span all 45 states and territories in the SSA database. The highest counts are in Texas, Louisiana, Minnesota. The lowest are in Vermont, Nebraska, District of Columbia. On average, about 274 Cullens were registered per state.
Cullen + Last Name Combinations
How many people share a full name with Cullen as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cullen
Other first names starting with C with a similar number of bearers.
Cullen: Questions and Answers
How many people in the U.S. are named Cullen?
We estimate approximately 15,217 people named Cullen 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 22,524 Americans share this first name.
Is Cullen a common name?
Cullen is classified as "Uncommon" and is more popular than 98.2% of all first names in the SSA database. A total of 16,500 births have been registered with this name since 1880.
When was Cullen most popular?
Cullen reached peak popularity in 2010, when 685 babies were given this name. The average age of a living person named Cullen is approximately 23 years old, reflecting when the name was most commonly given.
Is Cullen a male name?
Cullen is predominantly male. 99.4% of people with this name are male. See the gender breakdown above for full details.
How many Cullen Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cullen Smith, Cullen Johnson, Cullen 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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