How Many People Are Named Kathreen?
An estimated 233 people in the United States have the first name Kathreen. It is almost exclusively a female name. The average bearer is 57 years old, and Kathreen peaked in popularity in 1950 with 12 births that year.
Below you will find a full statistical profile of Kathreen 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 Kathreen paired with any surname.
Estimated Living Americans
233
About 1 in 1,471,049 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
57
years old
Peak Year
1950
12 births
Total Registered
372
since 1880
Gender Distribution for Kathreen
Kathreen is almost exclusively a female name. Out of 372 total births registered, 100.0% were female.
Kathreen as a female name
Ranked #14,408 in 2001
6 female births in 2001
Peak: 1950 (12 births)
Kathreen: Popularity Over Time
SSA records for Kathreen span from the 1910s to the 2000s, covering 10 decades of naming data. The most popular decade for this name was the 1950s, when 80 babies were registered. Kathreen has declined significantly from its peak in the 1950s. Recent registrations are a fraction of what they were at the name's height.
Kathreen by Decade
How has Kathreen 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.
Kathreen + Last Name Combinations
How many people share a full name with Kathreen as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kathreen
Other first names starting with K with a similar number of bearers.
Kathreen: Questions and Answers
How many people in the U.S. are named Kathreen?
We estimate approximately 233 people named Kathreen 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 1,471,049 Americans share this first name.
Is Kathreen a common name?
Kathreen is classified as "Very Rare" and is more popular than 76.2% of all first names in the SSA database. A total of 372 births have been registered with this name since 1880.
When was Kathreen most popular?
Kathreen reached peak popularity in 1950, when 12 babies were given this name. The average age of a living person named Kathreen is approximately 57 years old, reflecting when the name was most commonly given.
Is Kathreen a female name?
Kathreen is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Kathreen Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kathreen Smith, Kathreen Johnson, Kathreen 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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