Eilish is a distinctive girls' name in England & Wales, ranking #4201 in 2025 with 5 recorded births. The name reached its all-time peak in 1996 with 56 births ranking #491. Since 1996, the popularity has decreased by 91.1%. In 2025, approximately 1 in every 50,656 girls born was named Eilish. STABLE Recent data shows the name is currently stable.