How Many People Are Named Kieran?
An estimated 17,885 people in the United States have the first name Kieran. It is predominantly male (91.3%). The average bearer is 19 years old, and Kieran peaked in popularity in 2024 with 724 births that year.
Below you will find a full statistical profile of Kieran 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 Kieran paired with any surname.
Estimated Living Americans
17,885
About 1 in 19,164 people in the U.S.
Rarity
Uncommon
Predicted Gender
Male
91.3% confidence
Average Age
19
years old
Peak Year
2024
724 births
Total Registered
18,382
since 1880
Gender Distribution for Kieran
Kieran is predominantly male (91.3%), though 1,594 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Kieran as a male name
Ranked #440 in 2024
713 male births in 2024
Peak: 2024 (713 births)
Kieran as a female name
Ranked #9,227 in 2024
11 female births in 2024
Peak: 2007 (77 births)
Kieran: Popularity Over Time
SSA records for Kieran span from the 1910s to the 2020s, covering 12 decades of naming data. The most popular decade for this name was the 2010s, when 5,620 babies were registered. While Kieran is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Kieran by Decade
How has Kieran 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.
Kieran by State
Birth registrations for Kieran span all 47 states and territories in the SSA database. The highest counts are in New York, California, Pennsylvania. The lowest are in Montana, Hawaii, Vermont. On average, about 304 Kierans were registered per state.
Kieran + Last Name Combinations
How many people share a full name with Kieran as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kieran
Other first names starting with K with a similar number of bearers.
Kieran: Questions and Answers
How many people in the U.S. are named Kieran?
We estimate approximately 17,885 people named Kieran 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 19,164 Americans share this first name.
Is Kieran a common name?
Kieran is classified as "Uncommon" and is more popular than 98.4% of all first names in the SSA database. A total of 18,382 births have been registered with this name since 1880.
When was Kieran most popular?
Kieran reached peak popularity in 2024, when 724 babies were given this name. The average age of a living person named Kieran is approximately 19 years old, reflecting when the name was most commonly given.
Is Kieran a male name?
Kieran is predominantly male. 91.3% of people with this name are male. See the gender breakdown above for full details.
How many Kieran Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kieran Smith, Kieran Johnson, Kieran 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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