Over the past 110 years, 567 girls and 209 407 boys have been named Troy. The name Troy ranks 4685th in the United States among the most common names for girls. For the first time more than ten times newborns were named Troy in 1925. The peak of popularity of the name Troy came in the 1940s and 1960s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.