How Many People Are Named Kiley?
An estimated 19,689 people in the United States have the first name Kiley. It is predominantly female (94.6%). The average bearer is 25 years old, and Kiley peaked in popularity in 2008 with 1,097 births that year.
Below you will find a full statistical profile of Kiley 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 Kiley paired with any surname.
Estimated Living Americans
19,689
About 1 in 17,408 people in the U.S.
Rarity
Uncommon
Predicted Gender
Female
94.6% confidence
Average Age
25
years old
Peak Year
2008
1,097 births
Total Registered
20,207
since 1880
Gender Distribution for Kiley
Kiley is predominantly female (94.6%), though 1,097 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Kiley as a male name
Ranked #13,318 in 2016
5 male births in 2016
Peak: 1971 (80 births)
Kiley as a female name
Ranked #2,984 in 2024
55 female births in 2024
Peak: 2008 (1,089 births)
Kiley: Popularity Over Time
SSA records for Kiley span from the 1950s to the 2020s, covering 8 decades of naming data. The most popular decade for this name was the 2000s, when 8,193 babies were registered. Kiley has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Kiley by Decade
How has Kiley 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.
Kiley by State
Birth registrations for Kiley span all 48 states and territories in the SSA database. The highest counts are in California, Texas, Ohio. The lowest are in Montana, Alaska, North Dakota. On average, about 351 Kileys were registered per state.
Kiley + Last Name Combinations
How many people share a full name with Kiley as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kiley
Other first names starting with K with a similar number of bearers.
Kiley: Questions and Answers
How many people in the U.S. are named Kiley?
We estimate approximately 19,689 people named Kiley 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 17,408 Americans share this first name.
Is Kiley a common name?
Kiley is classified as "Uncommon" and is more popular than 98.5% of all first names in the SSA database. A total of 20,207 births have been registered with this name since 1880.
When was Kiley most popular?
Kiley reached peak popularity in 2008, when 1,097 babies were given this name. The average age of a living person named Kiley is approximately 25 years old, reflecting when the name was most commonly given.
Is Kiley a female name?
Kiley is predominantly female. 94.6% of people with this name are female. See the gender breakdown above for full details.
How many Kiley Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kiley Smith, Kiley Johnson, Kiley 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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