How Many People Are Named Jillyan?
people named Jillyan are alive in the United States today (estimate)
About 1 in 1,195,051 people in the US has this name
Based on 291 babies named Jillyan in Social Security records from 1978 to 2014, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
17 births
Trend
Last year given
⚧ Gender Distribution
All of the babies given the name Jillyan in the records were girls.
👥 Age Distribution
The average person named Jillyan alive today is about 26 years old, and 67% are under 30. Half of them were between 18 and 34 in 2025.
📈 Popularity Over Time
Jillyan first appears in the records in 1978 and was given most often in 1999, to 17 babies. The last year it was given to at least 5 babies of one sex was 2014.
Babies given the name each year, 1978 to 2014
🏆 Rank History
Jillyan has never been one of the 100 most popular girls' names. Its best rank was #5,907, in 1979.
| Girls | |
|---|---|
| Rank in 2025 | Not ranked |
| Best rank | #5,907 (1979) |
| Years in the top 100 | None |
| Rank in its biggest decade | #9,064 in the 2000s |
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