How Many People Are Named Illya?
An estimated 365 people in the United States have the first name Illya. It is predominantly male (90.3%). The average bearer is 50 years old, and Illya peaked in popularity in 1966 with 89 births that year.
Below you will find a full statistical profile of Illya 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 Illya paired with any surname.
Estimated Living Americans
365
About 1 in 939,053 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
90.3% confidence
Average Age
50
years old
Peak Year
1966
89 births
Total Registered
404
since 1880
Gender Distribution for Illya
Illya is predominantly male (90.3%), though 39 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Illya as a male name
Ranked #12,967 in 2024
5 male births in 2024
Peak: 1966 (78 births)
Illya as a female name
Ranked #11,454 in 2024
8 female births in 2024
Peak: 1966 (11 births)
Illya: Popularity Over Time
SSA records for Illya span from the 1960s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 1960s, when 244 babies were registered. Illya has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Illya by Decade
How has Illya 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.
Illya by State
Birth registrations for Illya span all 6 states and territories in the SSA database. The highest counts are in California, Georgia, Louisiana. The lowest are in Texas, New York, South Carolina. On average, about 7 Illyas were registered per state.
Illya + Last Name Combinations
How many people share a full name with Illya as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Illya
Other first names starting with I with a similar number of bearers.
Illya: Questions and Answers
How many people in the U.S. are named Illya?
We estimate approximately 365 people named Illya 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 939,053 Americans share this first name.
Is Illya a common name?
Illya is classified as "Very Rare" and is more popular than 81.4% of all first names in the SSA database. A total of 404 births have been registered with this name since 1880.
When was Illya most popular?
Illya reached peak popularity in 1966, when 89 babies were given this name. The average age of a living person named Illya is approximately 50 years old, reflecting when the name was most commonly given.
Is Illya a male name?
Illya is predominantly male. 90.3% of people with this name are male. See the gender breakdown above for full details.
How many Illya Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Illya Smith, Illya Johnson, Illya 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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