MallowbyNames

Jillyan

JIL-ee-an · Of uncertain origin; possibly a spelling variant of Jillian, a feminine form of Julian, ultimately from the Roman family name Julius.

Peak popularity
1999
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Jillyan since 1978

Babies named Jillyan per year in U.S. Social Security records.

61117198020002020Most births 1999Girls
Data table (by decade)
DecadeGirls
1970s16
1980s48
1990s66
2000s118
2010s43
2020s0

Meaning & origin

Jillyan is a respelling of Jillian that first appeared in U.S. birth records in 1978. It saw its peak usage in 1999, though even then it was extremely rare, given to fewer than five girls that year. The name has never cracked the top 1,000 and has remained stable in its low usage ever since, with no recorded instances in any state's top 1,000. As a modern variant of a classic name, Jillyan appeals to parents who want a familiar sound with a distinctive spelling. Its trajectory is stable, indicating that while it never became popular, it has not fallen out of use entirely. The name's rarity means it stands out without being unfamiliar.

Jillyan is a modern spelling variant of Jillian, which is the English feminine form of Julian (ultimately from the Roman name Julius). Jillian has been in use since the Middle Ages, but the specific spelling Jillyan most likely emerged in the late 20th century as a way to personalize or modernize the traditional name. It has never been as common as Jillian or Gillian, and its usage has remained sporadic.

Nicknames & variants

Nicknames: Jill, Jilly

Variants: Jillian, Gillian, Jilliane, Jilian

Sibling names for Jillyan

Names that share Jillyan's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

J is for Jillyan, our favorite little girl.

J is for Jillyan…”

In a Mallowby alphabet book, Jillyan's letter becomes Jillyan's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Jillyan's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Jillyan mean?
The meaning of Jillyan is uncertain, but it is a spelling variant of Jillian, which is a feminine form of Julian, traditionally meaning 'youthful' or 'downy-bearded' from the Roman family name Julius.
How popular is the name Jillyan?
Jillyan has never ranked in the top 1,000 U.S. baby names. Its peak year was 1999, but even then it was given to fewer than five girls per year.
Is Jillyan a boy or girl name?
Jillyan is almost exclusively used as a girl's name.