How Many People Are Named Koleen?
An estimated 187 people in the United States have the first name Koleen. It is almost exclusively a female name. The average bearer is 61 years old, and Koleen peaked in popularity in 1959 with 15 births that year.
Below you will find a full statistical profile of Koleen 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 Koleen paired with any surname.
Estimated Living Americans
187
About 1 in 1,832,911 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
61
years old
Peak Year
1959
15 births
Total Registered
233
since 1880
Gender Distribution for Koleen
Koleen is almost exclusively a female name. Out of 233 total births registered, 100.0% were female.
Koleen as a female name
Ranked #14,298 in 1991
5 female births in 1991
Peak: 1959 (15 births)
Koleen: Popularity Over Time
SSA records for Koleen span from the 1940s to the 1990s, covering 6 decades of naming data. The most popular decade for this name was the 1960s, when 89 babies were registered. Koleen has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Koleen by Decade
How has Koleen 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.
Koleen + Last Name Combinations
How many people share a full name with Koleen as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Koleen
Other first names starting with K with a similar number of bearers.
Koleen: Questions and Answers
How many people in the U.S. are named Koleen?
We estimate approximately 187 people named Koleen 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 1,832,911 Americans share this first name.
Is Koleen a common name?
Koleen is classified as "Very Rare" and is more popular than 73.3% of all first names in the SSA database. A total of 233 births have been registered with this name since 1880.
When was Koleen most popular?
Koleen reached peak popularity in 1959, when 15 babies were given this name. The average age of a living person named Koleen is approximately 61 years old, reflecting when the name was most commonly given.
Is Koleen a female name?
Koleen is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Koleen Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Koleen Smith, Koleen Johnson, Koleen 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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