Sincere is a distinctive boys' name in United States, ranking #604 in 2024 with 471 recorded births. The name reached its all-time peak in 2022 with 545 births ranking #544. Since 1996, the popularity has increased by 6,628.6%. In 2024, approximately 1 in every 3,642 boys born was named Sincere. FALLING Recent data shows the name is currently falling.