Trinity is a moderately popular girls' name in United States, ranking #273 in 2021 with 1,147 recorded births. The name reached its all-time peak in 2004 with 5,638 births ranking #48. Since 1996, the popularity has increased by 246.5%. In 2021, approximately 1 in every 1,430 girls born was named Trinity. FALLING Recent data shows the name is currently falling.