How Many People Are Named Kien?
An estimated 510 people in the United States have the first name Kien. It is almost exclusively a male name. The average bearer is 17 years old, and Kien peaked in popularity in 2024 with 26 births that year.
Below you will find a full statistical profile of Kien 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 Kien paired with any surname.
Estimated Living Americans
510
About 1 in 672,067 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
17
years old
Peak Year
2024
26 births
Total Registered
517
since 1880
Gender Distribution for Kien
Kien is almost exclusively a male name. Out of 517 total births registered, 100.0% were male.
Kien as a male name
Ranked #4,131 in 2024
26 male births in 2024
Peak: 2024 (26 births)
Kien: Popularity Over Time
SSA records for Kien span from the 1980s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 2010s, when 179 babies were registered. While Kien is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Kien by Decade
How has Kien 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.
Kien by State
Kien + Last Name Combinations
How many people share a full name with Kien as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kien
Other first names starting with K with a similar number of bearers.
Kien: Questions and Answers
How many people in the U.S. are named Kien?
We estimate approximately 510 people named Kien 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 672,067 Americans share this first name.
Is Kien a common name?
Kien is classified as "Very Rare" and is more popular than 84.7% of all first names in the SSA database. A total of 517 births have been registered with this name since 1880.
When was Kien most popular?
Kien reached peak popularity in 2024, when 26 babies were given this name. The average age of a living person named Kien is approximately 17 years old, reflecting when the name was most commonly given.
Is Kien a male name?
Kien is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Kien Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kien Smith, Kien Johnson, Kien 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.
Search for a full name combination
How Many of Me