How Many People Are Named Caitlin?
An estimated 108,321 people in the United States have the first name Caitlin. While not in the top 50, it remains a well-known name ranking #492 overall. It is almost exclusively a female name. The average bearer is 32 years old, and Caitlin peaked in popularity in 1988 with 7,274 births that year.
Below you will find a full statistical profile of Caitlin 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 Caitlin paired with any surname.
Key Insights
- While Caitlin is overwhelmingly female, 283 male births have been registered with this name since 1880.
- Caitlin 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
108,321
About 1 in 3,164 people in the U.S.
Rarity
Common
Predicted Gender
Female
99.7% confidence
Average Age
32
years old
Peak Year
1988
7,274 births
Total Registered
112,351
since 1880
Gender Distribution for Caitlin
Caitlin is almost exclusively a female name. Out of 112,351 total births registered, 99.7% were female.
Caitlin as a male name
Ranked #6,195 in 2004
12 male births in 2004
Peak: 1989 (44 births)
Caitlin as a female name
Ranked #1,679 in 2024
121 female births in 2024
Peak: 1988 (7,246 births)
Caitlin: Popularity Over Time
SSA records for Caitlin span from the 1950s to the 2020s, covering 8 decades of naming data. The most popular decade for this name was the 1990s, when 49,130 babies were registered. Caitlin has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Caitlin by Decade
How has Caitlin 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.
Caitlin by State
Birth registrations for Caitlin span all 51 states and territories in the SSA database. The highest counts are in California, New York, Texas. The lowest are in Wyoming, North Dakota, South Dakota. On average, about 2,166 Caitlins were registered per state.
Caitlin + Last Name Combinations
How many people share a full name with Caitlin as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Caitlin
Other first names starting with C with a similar number of bearers.
Caitlin: Questions and Answers
How many people in the U.S. are named Caitlin?
We estimate approximately 108,321 people named Caitlin 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 3,164 Americans share this first name.
Is Caitlin a common name?
Caitlin is classified as "Common" and is more popular than 99.5% of all first names in the SSA database. A total of 112,351 births have been registered with this name since 1880.
When was Caitlin most popular?
Caitlin reached peak popularity in 1988, when 7,274 babies were given this name. The average age of a living person named Caitlin is approximately 32 years old, reflecting when the name was most commonly given.
Is Caitlin a female name?
Caitlin is predominantly female. 99.7% of people with this name are female. See the gender breakdown above for full details.
How many Caitlin Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Caitlin Smith, Caitlin Johnson, Caitlin 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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