MallowbyNames

Kayley

KAY-lee · Of debated origin; possibly a variant of Kayla, which may mean 'crown' or 'slim'.

2025 rank (girls)
#3,389
Babies named in 2025
45
Peak popularity
1999
2025 frequency
1 in 35,717 girls
Usually for
Girls
Trend
Declining since 1999

Declining since 1999, #3,389 for girls today.

Popularity of Kayley since 1977

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

154307461198020002020Most births 1999Girls
Data table (by decade)
DecadeGirls
1970s5
1980s476
1990s2,559
2000s3,679
2010s1,503
2020s364

Meaning & origin

Kayley emerged in U.S. baby name records in 1977 and rose to its peak popularity in 1999, a year when it ranked highest nationally. Since then, its usage has steadily declined, reflecting a broader trend away from similar-sounding -ley names that dominated the 1990s. In the most recent data (2025), Kayley ranks 3,389 and appears in about 1 in 35,717 births, making it an uncommon but not unheard-of choice. While most Kayleys were born in the 1990s, the name has also seen notable use in top states like New York and California. Its exact origin remains unclear; it is generally seen as a modern English creation, likely influenced by the popularity of Kayla and other names ending in -ley. This flexible heritage, along with its straightforward pronunciation and familiar sound, has helped Kayley maintain a steady though diminished presence in the decades since its peak.

Kayley is a modern English name, likely a variant of Kayla, which itself emerged in the late 20th century. Kayla may derive from a combination of the name Kay and the popular suffix -la, or it may be a shortened form of Michaela. The name first appeared in U.S. records in 1977 and saw a peak in popularity in 1999, reflecting the trend for similar-sounding names like Katelyn and Hailey.

Where Kayley is most popular

Births per 100,000 girls by state. Press play or drag the slider to watch it move across the decades. The lightest shade means too few recorded births.

2020s
Fewermore per 100k girlstoo few births

Kayley” around the world

Where Kayley lands in the latest official birth statistics abroad, matched to the U.S. spelling.

  • Ireland

    3

    babies in 2025

Sources: CSO Ireland (Ireland).

Nicknames & variants

Nicknames: Kay, Lee

Variants: Kaylee, Kaley, Kailey, Kayleigh

Sibling names for Kayley

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

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

K is for Kayley, our favorite little girl.

K is for Kayley…”

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

Make Kayley's book

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

Questions parents ask

What does the name Kayley mean?
The meaning of Kayley is uncertain. It is commonly considered a variant of Kayla, which may mean 'crown' (from Irish surname) or 'slim' (from Hebrew). The exact origin is debated.
How popular is Kayley today?
As of 2025, Kayley ranks 3,389 in the U.S., with approximately 1 in 35,717 newborn girls given the name. Its popularity peaked in 1999 and has been declining since.
Is Kayley a boy or girl name?
Kayley is used almost exclusively for girls. It has a feminine sound and is a modern variant of the increasingly popular Kayla and related names.