How Many People Are Named Kou?
An estimated 699 people in the United States have the first name Kou. It is predominantly male (95.4%). The average bearer is 35 years old, and Kou peaked in popularity in 1992 with 53 births that year.
Below you will find a full statistical profile of Kou 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 Kou paired with any surname.
Estimated Living Americans
699
About 1 in 490,350 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
95.4% confidence
Average Age
35
years old
Peak Year
1992
53 births
Total Registered
724
since 1880
Gender Distribution for Kou
Kou is predominantly male (95.4%), though 33 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Kou as a male name
Ranked #13,391 in 2017
5 male births in 2017
Peak: 1992 (48 births)
Kou as a female name
Ranked #14,417 in 1992
5 female births in 1992
Peak: 1981 (7 births)
Kou: Popularity Over Time
SSA records for Kou span from the 1970s to the 2010s, covering 5 decades of naming data. The most popular decade for this name was the 1980s, when 341 babies were registered. Kou has declined significantly from its peak in the 1980s. Recent registrations are a fraction of what they were at the name's height.
Kou by Decade
How has Kou 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.
Kou by State
Birth registrations for Kou span all 4 states and territories in the SSA database. The highest counts are in California, Minnesota, Wisconsin. The lowest are in Colorado, Wisconsin, Minnesota. On average, about 118 Kous were registered per state.
Kou + Last Name Combinations
How many people share a full name with Kou as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kou
Other first names starting with K with a similar number of bearers.
Kou: Questions and Answers
How many people in the U.S. are named Kou?
We estimate approximately 699 people named Kou 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 490,350 Americans share this first name.
Is Kou a common name?
Kou is classified as "Very Rare" and is more popular than 87.6% of all first names in the SSA database. A total of 724 births have been registered with this name since 1880.
When was Kou most popular?
Kou reached peak popularity in 1992, when 53 babies were given this name. The average age of a living person named Kou is approximately 35 years old, reflecting when the name was most commonly given.
Is Kou a male name?
Kou is predominantly male. 95.4% of people with this name are male. See the gender breakdown above for full details.
How many Kou Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kou Smith, Kou Johnson, Kou 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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