How Many People Are Named Kathy Castor?
There are approximately 5 people named Kathy Castor living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 68,550,868 Americans.
This estimate combines SSA birth records for the first name Kathy with Census Bureau frequency data for the surname Castor. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
5
1 in 68,550,868 Americans
Combination Rarity
Very Rare
First Name
View full profileKathy
Last Name
View full profileCastor
Kathy: Popularity Over Time
Year-by-year SSA birth registrations for the first name Kathy. The peak year was 1958 with 23,985 births. The average person named Kathy today is 65 years old.
Ancestry of the Castor Surname
Self-reported race and ethnicity breakdown for people with the surname Castor, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Kathy" has an estimated frequency of 0.0723% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Castor" appears at a rate of 2.06 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 5 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Kathy
Kathy Castor: Questions and Answers
How many people are named Kathy Castor?
We estimate approximately 5 people named Kathy Castor are alive in the United States today. The first name Kathy is shared by 247,668 Americans, and the surname Castor is shared by 6,919.
How rare is the name Kathy Castor?
This name combination is classified as Very Rare, occurring at a rate of about 1 in 68,550,868 Americans. The first name Kathy is common and the surname Castor is rare.
Is Kathy a male or female name?
Kathy is predominantly female, with 0.2% of bearers being male and 99.8% female. It peaked in popularity in 1958 and the average bearer today is 65 years old.
Where does this data come from?
First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. Surname data comes from the 2010 U.S. Census Bureau. Full methodology.
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