MallowbyNames

Jacilyn

JAS-ə-lin · of uncertain origin; likely a modern coinage combining elements from names like Jacqueline and Lyn

Peak popularity
1984
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Jacilyn since 1974

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

71522198020002020Most births 1984Girls
Data table (by decade)
DecadeGirls
1970s32
1980s150
1990s108
2000s72
2010s19
2020s5

Meaning & origin

Jacilyn is a distinctly modern feminine name that emerged in the 1970s and saw its most frequent use in the 1980s. The name was first recorded in 1974, and its peak year was 1984, during the height of the -lyn suffix trend. Despite never appearing in the national top 1,000, Jacilyn has maintained a stable level of use through the decades into 2025. Its construction follows a pattern familiar to American parents of that era: combining a familiar starting syllable (Jac- from Jacqueline) with a fashionable ending (lyn). This blend gives Jacilyn a familiar yet distinctive sound, fitting the broader trend of invented names from the late 20th century.

Jacilyn first appeared in United States birth records in 1974. It is a modern invention, formed by blending the beginning of Jacqueline (a French feminine form of Jacques, ultimately from Hebrew Jacob) with the popular suffix -lyn (from names like Lynn). This style of name construction was common in the mid-to-late 20th century. The name saw modest use in the 1980s, peaking in 1984.

Nicknames & variants

Nicknames: Jackie, Jaci, Lyn

Variants: Jacalyn, Jocelyn, Jacquelyn

Sibling names for Jacilyn

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

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

J is for Jacilyn, our favorite little girl.

J is for Jacilyn…”

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

Make Jacilyn's book

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

Questions parents ask

What does the name Jacilyn mean?
Jacilyn is a modern name of uncertain meaning, likely formed from Jacqueline and the suffix -lyn.
How popular is Jacilyn?
Jacilyn has never ranked among the top 1,000 names in the United States. Its peak usage was in 1984.
Is Jacilyn a boy or girl name?
Jacilyn is almost exclusively used as a girl's name.