Declining since 1999, #3,389 for girls today.
Popularity of Kayley since 1977
Babies named Kayley per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1970s | 5 |
| 1980s | 476 |
| 1990s | 2,559 |
| 2000s | 3,679 |
| 2010s | 1,503 |
| 2020s | 364 |
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.
“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
Sibling names for Kayley
Names that share Kayley's style, for a brother or sister.

