Fewer than five US girls were named Reiley in 2025, so it does not appear in that year’s SSA list for girls. Its best rank for girls was #3,284, reached in 1997. The most girls given the name in a single year was 37, in 1998. For comparison, it was #9,371 in 2015 and unranked in 1950.
Fewer than five US boys were named Reiley in 2025, so it does not appear in that year’s SSA list for boys. Its best rank for boys was #3,887, reached in 2002. The most boys given the name in a single year was 25, in 2009. For comparison, it was unranked (under five boys) in 2015 and unranked in 1950.
Social Security card records list Reiley in 31 years of the 146 from 1880 to 2025, starting in 1991 with 5 babies. In all, 942 US babies have been given the name, 66% of them girls and 34% boys. Its busiest decade was the 2000s, with 486 babies named Reiley.
Over the 10 years from 2016 to 2025, 76 US girls were named Reiley; the busiest of those years was 2018, with 15.
Related spellings in the SSA files include Riley (246,985 babies since 1880), Reilly (10,088 babies since 1880), Ryley (7,197 babies since 1880) and Rilee (3,742 babies since 1880).