Sinclair is a distinctive girls' name in United States, ranking #4857 in 2024 with 28 recorded births. The name reached its all-time peak in 2025 with 29 births ranking #4740. Since 1996, the popularity has increased by 55.6%. In 2024, approximately 1 in every 57,614 girls born was named Sinclair. RISING Recent data shows the name is currently rising.