MallowbyNames

Rilyn

RILL-in · Of uncertain origin; likely a modern coinage blending elements from names like Riley and Lynn.

2025 rank (girls)
#4,460
Babies named in 2025
31
Peak popularity
2012
2025 frequency
1 in 51,847 girls
Usually for
Girls
Trend
Declining since 2012

Declining since 2012, #4,460 for girls today.

Popularity of Rilyn since 1999

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

3367100200020102020Most births 2012GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1990s50
2000s28431
2010s727100
2020s26324

Meaning & origin

Rilyn is a modern American coinage that first appeared in U.S. birth records in 1999, a time when names ending in the popular suffix -lyn were gaining favor. It reached its peak popularity in 2012, when it ranked highest in usage, but has since been on a declining trajectory. As of 2024, the name is very rare, with approximately 1 in 51,847 girls given the name each year. Rilyn is used predominantly in Texas, reflecting regional naming trends. The name's appeal lies in its melodic, contemporary sound rather than any historical or etymological depth.

Rilyn first appeared in U.S. birth records in the late 1990s, suggesting a modern coinage. It is thought to be a combination of sounds from popular names such as Riley or Rylee with the suffix -lyn, which has been a fashionable element in feminine names since the late 20th century. The name does not have a historical etymology or a traditional meaning.

Where Rilyn is most popular

Births per 100,000 girls by state, 2025. The lightest shade means too few recorded births.

Nicknames & variants

Nicknames: Rily, Ryn

Sibling names for Rilyn

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

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

R is for Rilyn, our favorite little girl.

R is for Rilyn…”

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

Make Rilyn's book

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

Questions parents ask

What does the name Rilyn mean?
Rilyn is a modern coinage with no established meaning. It likely blends elements from names like Riley and Lynn, but its meaning is not rooted in any traditional language.
How popular is the name Rilyn?
Rilyn is a very rare name. In 2024, it ranked 4,460th in the U.S., with about 1 in 51,847 girls receiving the name. Its popularity peaked in 2012 and has been falling since.
Is Rilyn a boy's or girl's name?
Rilyn is almost exclusively used for girls.