How Many People Are Named Koy?
An estimated 944 people in the United States have the first name Koy. It is predominantly male (96.5%). The average bearer is 20 years old, and Koy peaked in popularity in 1997 with 46 births that year.
Below you will find a full statistical profile of Koy 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 Koy paired with any surname.
Estimated Living Americans
944
About 1 in 363,087 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
96.5% confidence
Average Age
20
years old
Peak Year
1997
46 births
Total Registered
961
since 1880
Gender Distribution for Koy
Koy is predominantly male (96.5%), though 34 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Koy as a male name
Ranked #3,482 in 2024
33 male births in 2024
Peak: 1997 (46 births)
Koy as a female name
Ranked #12,652 in 1993
6 female births in 1993
Peak: 1982 (7 births)
Koy: Popularity Over Time
SSA records for Koy span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 274 babies were registered. While Koy is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Koy by Decade
How has Koy 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.
Koy by State
Birth registrations for Koy span all 7 states and territories in the SSA database. The highest counts are in Texas, Utah, Louisiana. The lowest are in South Dakota, Idaho, Iowa. On average, about 16 Koys were registered per state.
Koy + Last Name Combinations
How many people share a full name with Koy as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Koy
Other first names starting with K with a similar number of bearers.
Koy: Questions and Answers
How many people in the U.S. are named Koy?
We estimate approximately 944 people named Koy 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 363,087 Americans share this first name.
Is Koy a common name?
Koy is classified as "Very Rare" and is more popular than 89.7% of all first names in the SSA database. A total of 961 births have been registered with this name since 1880.
When was Koy most popular?
Koy reached peak popularity in 1997, when 46 babies were given this name. The average age of a living person named Koy is approximately 20 years old, reflecting when the name was most commonly given.
Is Koy a male name?
Koy is predominantly male. 96.5% of people with this name are male. See the gender breakdown above for full details.
How many Koy Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Koy Smith, Koy Johnson, Koy 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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