How Many People Are Named Marykathryn?
An estimated 487 people in the United States have the first name Marykathryn. It is almost exclusively a female name. The average bearer is 30 years old, and Marykathryn peaked in popularity in 1994 with 20 births that year.
Below you will find a full statistical profile of Marykathryn 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 Marykathryn paired with any surname.
Estimated Living Americans
487
About 1 in 703,808 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
30
years old
Peak Year
1994
20 births
Total Registered
507
since 1880
Gender Distribution for Marykathryn
Marykathryn is almost exclusively a female name. Out of 507 total births registered, 100.0% were female.
Marykathryn as a female name
Ranked #14,589 in 2024
6 female births in 2024
Peak: 1994 (20 births)
Marykathryn: Popularity Over Time
SSA records for Marykathryn span from the 1960s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 1990s, when 156 babies were registered. Marykathryn has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Marykathryn by Decade
How has Marykathryn 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.
Marykathryn + Last Name Combinations
How many people share a full name with Marykathryn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Marykathryn
Other first names starting with M with a similar number of bearers.
Marykathryn: Questions and Answers
How many people in the U.S. are named Marykathryn?
We estimate approximately 487 people named Marykathryn 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 703,808 Americans share this first name.
Is Marykathryn a common name?
Marykathryn is classified as "Very Rare" and is more popular than 84.3% of all first names in the SSA database. A total of 507 births have been registered with this name since 1880.
When was Marykathryn most popular?
Marykathryn reached peak popularity in 1994, when 20 babies were given this name. The average age of a living person named Marykathryn is approximately 30 years old, reflecting when the name was most commonly given.
Is Marykathryn a female name?
Marykathryn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Marykathryn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Marykathryn Smith, Marykathryn Johnson, Marykathryn 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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