Dia is a distinctive girls' name in United States, ranking #4197 in 2025 with 34 recorded births. The name reached its all-time peak in 2015 with 62 births ranking #2819. Since 1996, the popularity has increased by 78.9%. In 2025, approximately 1 in every 47,273 girls born was named Dia. FALLING Recent data shows the name is currently falling.