Lainey is a popular girls' name in United States, ranking #54 in 2023 with 3,937 recorded births. The name reached its all-time peak in 2025 with 5,738 births ranking #30. Since 1996, the popularity has increased by 7,190.7%. In 2023, approximately 1 in every 407 girls born was named Lainey. RISING Recent data shows the name is currently rising.
Lainey is a warm, friendly short form usually linked to Elaine and the Helen name family. It has an easy modern feel while resting on a very old classic root.
Although informal in style, Lainey has become popular as a full given name in its own right. Its rise fits the broader move towards affectionate nickname-style names being used officially.