How Many People Are Named Keilly?
An estimated 592 people in the United States have the first name Keilly. It is almost exclusively a female name. The average bearer is 16 years old, and Keilly peaked in popularity in 2011 with 48 births that year.
Below you will find a full statistical profile of Keilly 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 Keilly paired with any surname.
Estimated Living Americans
592
About 1 in 578,977 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
16
years old
Peak Year
2011
48 births
Total Registered
599
since 1880
Gender Distribution for Keilly
Keilly is almost exclusively a female name. Out of 599 total births registered, 100.0% were female.
Keilly as a female name
Ranked #8,155 in 2024
13 female births in 2024
Peak: 2011 (48 births)
Keilly: Popularity Over Time
SSA records for Keilly span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2000s, when 258 babies were registered. Keilly has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Keilly by Decade
How has Keilly 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.
Keilly by State
Birth registrations for Keilly span all 5 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in Georgia, Florida, New York. On average, about 36 Keillys were registered per state.
Keilly + Last Name Combinations
How many people share a full name with Keilly as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Keilly
Other first names starting with K with a similar number of bearers.
Keilly: Questions and Answers
How many people in the U.S. are named Keilly?
We estimate approximately 592 people named Keilly 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 578,977 Americans share this first name.
Is Keilly a common name?
Keilly is classified as "Very Rare" and is more popular than 86.1% of all first names in the SSA database. A total of 599 births have been registered with this name since 1880.
When was Keilly most popular?
Keilly reached peak popularity in 2011, when 48 babies were given this name. The average age of a living person named Keilly is approximately 16 years old, reflecting when the name was most commonly given.
Is Keilly a female name?
Keilly is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Keilly Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Keilly Smith, Keilly Johnson, Keilly 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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