How Many People Are Named Kathryn Cox?
There are approximately 245 people named Kathryn Cox living in the United States today. That makes this name combination uncommon, occurring at a rate of about 1 in 1,398,997 Americans.
This estimate combines SSA birth records for the first name Kathryn with Census Bureau frequency data for the surname Cox. Below you will find a breakdown of both names, including popularity trends, gender data, and Census background data where it is available.
Estimated People with This Name
245
1 in 1,398,997 Americans
Combination Rarity
Uncommon
First Name
View full profileKathryn
Last Name
View full profileCox
Kathryn: Popularity Over Time
Year-by-year SSA birth registrations for the first name Kathryn. The peak year was 1952 with 8,517 births. The average person named Kathryn today is 50 years old.
Ancestry of the First Name Kathryn
In the 2020 Census, the first name Kathryn was most commonly recorded among people who identified as White (91.53%). The next largest recorded groups were Hispanic (2.86%) and Two or More Races (2.42%).
These percentages describe the people who had the first name Kathryn in the 2020 Census. They do not tell you the deeper origin or meaning of the name itself.
Read this as a snapshot of who already had the name in 2020, not as a trend line. The SSA chart above is still the better way to see how Kathryn rose or fell over time.
Ancestry of the Cox Surname
The surname Cox was most commonly recorded among people who identified as White in the 2020 Census.
This is a self-reported race and ethnicity breakdown for people who had the surname Cox in the published Census surname tables. It gives useful context around who was recorded with the name, but it does not tell the full family history of every Boone line.
How we calculated this
The first name "Kathryn" has an estimated frequency of 0.0855% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Cox" appears at a rate of 83.60 per 100,000 people in the 2020 U.S. Census.
We do not use the Census first-name snapshot for the main estimate because it is only published once every 10 years. The latest public first-name Census file is from 2020, which is already 6 years old. SSA birth records plus CDC survival data give a better current estimate of how many people with the first name Kathryn are likely to be alive now.
Multiplying these frequencies against the U.S. population of ~343 million gives 245 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Kathryn
Other people with the surname Cox
Kathryn Cox: Questions and Answers
How many people are named Kathryn Cox?
We estimate approximately 245 people named Kathryn Cox are alive in the United States today. The first name Kathryn is shared by 293,017 Americans, and the surname Cox is shared by 286,535.
How rare is the name Kathryn Cox?
This name combination is classified as Uncommon, occurring at a rate of about 1 in 1,398,997 Americans. The first name Kathryn is common and the surname Cox is common.
Is Kathryn a male or female name?
Kathryn is predominantly female, with 0.2% of bearers being male and 99.8% female. It peaked in popularity in 1952 and the average bearer today is 50 years old.
What does the Census say about the first name Kathryn?
In the 2020 Census, the first name Kathryn was most commonly recorded among people who identified as White (91.53%). The next largest recorded groups were Hispanic (2.86%) and Two or More Races (2.42%). These percentages describe the people who had the name in the 2020 Census, not the deeper origin of the name itself.
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. When available, first-name Census background data comes from the 2020 U.S. Census Bureau first-name tables. Surname data comes from the 2020 U.S. Census Bureau. Full methodology.
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