Over the past 110 years, 827 boys and 77 535 girls have been named Trinity. The name Trinity ranks 2788th in the United States among the most common names for boys. For the first time more than ten times newborns were named Trinity in 1972. The peak of popularity of the name Trinity came in the 1980s and 2000s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.