How Many People Are Named Caitlyn?
An estimated 51,275 people in the United States have the first name Caitlyn. It is almost exclusively a female name. The average bearer is 26 years old, and Caitlyn peaked in popularity in 1998 with 2,943 births that year.
Below you will find a full statistical profile of Caitlyn 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 Caitlyn paired with any surname.
Key Insights
- Caitlyn has fallen dramatically from its peak in the 1990s. Recent registrations are less than 5% of what they were at the name's height.
Estimated Living Americans
51,275
About 1 in 6,685 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
99.9% confidence
Average Age
26
years old
Peak Year
1998
2,943 births
Total Registered
52,565
since 1880
Gender Distribution for Caitlyn
Caitlyn is almost exclusively a female name. Out of 52,565 total births registered, 99.9% were female.
Caitlyn as a male name
Ranked #6,196 in 2004
12 male births in 2004
Peak: 2004 (12 births)
Caitlyn as a female name
Ranked #2,346 in 2024
78 female births in 2024
Peak: 1998 (2,937 births)
Caitlyn: Popularity Over Time
SSA records for Caitlyn span from the 1960s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 1990s, when 22,003 babies were registered. Caitlyn has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Caitlyn by Decade
How has Caitlyn 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.
Caitlyn by State
Birth registrations for Caitlyn span all 51 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in District of Columbia, Wyoming, Alaska. On average, about 1,004 Caitlyns were registered per state.
Caitlyn + Last Name Combinations
How many people share a full name with Caitlyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Caitlyn
Other first names starting with C with a similar number of bearers.
Caitlyn: Questions and Answers
How many people in the U.S. are named Caitlyn?
We estimate approximately 51,275 people named Caitlyn 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 6,685 Americans share this first name.
Is Caitlyn a common name?
Caitlyn is classified as "Uncommon" and is more popular than 99.1% of all first names in the SSA database. A total of 52,565 births have been registered with this name since 1880.
When was Caitlyn most popular?
Caitlyn reached peak popularity in 1998, when 2,943 babies were given this name. The average age of a living person named Caitlyn is approximately 26 years old, reflecting when the name was most commonly given.
Is Caitlyn a female name?
Caitlyn is predominantly female. 99.9% of people with this name are female. See the gender breakdown above for full details.
How many Caitlyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Caitlyn Smith, Caitlyn Johnson, Caitlyn 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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