How Many People Are Named Aileen?
An estimated 24,434 people in the United States have the first name Aileen. It is almost exclusively a female name. The average bearer is 32 years old, and Aileen peaked in popularity in 2009 with 685 births that year.
Below you will find a full statistical profile of Aileen 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 Aileen paired with any surname.
Estimated Living Americans
24,434
About 1 in 14,028 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
100.0% confidence
Average Age
32
years old
Peak Year
2009
685 births
Total Registered
37,298
since 1880
Gender Distribution for Aileen
Aileen is almost exclusively a female name. Out of 37,298 total births registered, 100.0% were female.
Aileen as a male name
Ranked #12,340 in 2011
5 male births in 2011
Peak: 2011 (5 births)
Aileen as a female name
Ranked #718 in 2024
390 female births in 2024
Peak: 2009 (685 births)
Aileen: Popularity Over Time
SSA records for Aileen span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2000s, when 5,820 babies were registered. While Aileen is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Aileen by Decade
How has Aileen 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1880s | 63 | 0 | 63 | |
| 1890s | 332 | 0 | 332 | |
| 1900s | 818 | 0 | 818 | |
| 1910s | 2,831 | 0 | 2,831 | |
| 1920s | 4,648 | 0 | 4,648 | |
| 1930s | 2,157 | 0 | 2,157 | |
| 1940s | 1,629 | 0 | 1,629 | |
| 1950s | 1,956 | 0 | 1,956 | |
| 1960s | 2,308 | 0 | 2,308 | |
| 1970s | 1,781 | 0 | 1,781 | |
| 1980s | 2,356 | 0 | 2,356 | |
| 1990s | 3,258 | 0 | 3,258 | |
| 2000s | 5,820 | 0 | 5,820 | |
| 2010s | 5,359 | 5 | 5,354 | |
| 2020s | 1,982 | 0 | 1,982 | |
Aileen by State
Birth registrations for Aileen span all 45 states and territories in the SSA database. The highest counts are in California, New York, Texas. The lowest are in Vermont, District of Columbia, South Dakota. On average, about 678 Aileens were registered per state.
Aileen + Last Name Combinations
How many people share a full name with Aileen as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Aileen
Other first names starting with A with a similar number of bearers.
Aileen: Questions and Answers
How many people in the U.S. are named Aileen?
We estimate approximately 24,434 people named Aileen 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 14,028 Americans share this first name.
Is Aileen a common name?
Aileen is classified as "Uncommon" and is more popular than 98.7% of all first names in the SSA database. A total of 37,298 births have been registered with this name since 1880.
When was Aileen most popular?
Aileen reached peak popularity in 2009, when 685 babies were given this name. The average age of a living person named Aileen is approximately 32 years old, reflecting when the name was most commonly given.
Is Aileen a female name?
Aileen is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Aileen Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Aileen Smith, Aileen Johnson, Aileen 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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