How Many People Are Named Rilley?
An estimated 139 people in the United States have the first name Rilley. It is used for both genders, with 51.1% female. The average bearer is 18 years old, and Rilley peaked in popularity in 2012 with 14 births that year.
Below you will find a full statistical profile of Rilley 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 Rilley paired with any surname.
Estimated Living Americans
139
About 1 in 2,465,859 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
51.1% confidence
Average Age
18
years old
Peak Year
2012
14 births
Total Registered
141
since 1880
Gender Distribution for Rilley
Rilley is a genuinely unisex name, used for both males (48.9%) and females (51.1%). Out of 141 total births registered, 69 were male and 72 were female.
Rilley as a male name
Ranked #11,954 in 2012
6 male births in 2012
Peak: 2002 (9 births)
Rilley as a female name
Ranked #17,174 in 2021
5 female births in 2021
Peak: 2009 (8 births)
Rilley: Popularity Over Time
SSA records for Rilley span from the 2000s to the 2020s, covering 3 decades of naming data. The most popular decade for this name was the 2000s, when 92 babies were registered. Rilley has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Rilley by Decade
How has Rilley 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.
Rilley + Last Name Combinations
How many people share a full name with Rilley as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Rilley
Other first names starting with R with a similar number of bearers.
Rilley: Questions and Answers
How many people in the U.S. are named Rilley?
We estimate approximately 139 people named Rilley 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 2,465,859 Americans share this first name.
Is Rilley a common name?
Rilley is classified as "Very Rare" and is more popular than 69.2% of all first names in the SSA database. A total of 141 births have been registered with this name since 1880.
When was Rilley most popular?
Rilley reached peak popularity in 2012, when 14 babies were given this name. The average age of a living person named Rilley is approximately 18 years old, reflecting when the name was most commonly given.
Is Rilley a female name?
Rilley is predominantly female. 51.1% of people with this name are female. See the gender breakdown above for full details.
How many Rilley Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Rilley Smith, Rilley Johnson, Rilley 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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