Sierra is a distinctive girls' name in England & Wales, ranking #763 in 2025 with 48 recorded births. The name reached its all-time peak in 2023 with 56 births ranking #647. Since 1996, the popularity has increased by 1,100.0%. In 2025, approximately 1 in every 5,277 girls born was named Sierra. FALLING Recent data shows the name is currently falling.