How Many People Are Named Katy?
An estimated 17,546 people in the United States have the first name Katy. It is almost exclusively a female name. The average bearer is 39 years old, and Katy peaked in popularity in 1987 with 674 births that year.
Below you will find a full statistical profile of Katy 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 Katy paired with any surname.
Estimated Living Americans
17,546
About 1 in 19,535 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
100.0% confidence
Average Age
39
years old
Peak Year
1987
674 births
Total Registered
20,891
since 1880
Gender Distribution for Katy
Katy is almost exclusively a female name. Out of 20,891 total births registered, 100.0% were female.
Katy as a male name
Ranked #6,763 in 1980
5 male births in 1980
Peak: 1980 (5 births)
Katy as a female name
Ranked #2,467 in 2024
73 female births in 2024
Peak: 1987 (674 births)
Katy: Popularity Over Time
SSA records for Katy span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1980s, when 5,931 babies were registered. Katy has declined significantly from its peak in the 1980s. Recent registrations are a fraction of what they were at the name's height.
Katy by Decade
How has Katy 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.
Katy by State
Birth registrations for Katy span all 47 states and territories in the SSA database. The highest counts are in Texas, California, New York. The lowest are in Vermont, Rhode Island, Nevada. On average, about 327 Katys were registered per state.
Katy + Last Name Combinations
How many people share a full name with Katy as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Katy
Other first names starting with K with a similar number of bearers.
Katy: Questions and Answers
How many people in the U.S. are named Katy?
We estimate approximately 17,546 people named Katy 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 19,535 Americans share this first name.
Is Katy a common name?
Katy is classified as "Uncommon" and is more popular than 98.4% of all first names in the SSA database. A total of 20,891 births have been registered with this name since 1880.
When was Katy most popular?
Katy reached peak popularity in 1987, when 674 babies were given this name. The average age of a living person named Katy is approximately 39 years old, reflecting when the name was most commonly given.
Is Katy a female name?
Katy is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Katy Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Katy Smith, Katy Johnson, Katy 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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