In 2025, 46 US girls were named Rocio, making it the 3,377th most common girls’ name of the year, down 688 places from #2,689 in 2024. That is 19 fewer than the 65 girls named Rocio in 2024. Its best rank for girls was #524, reached in 1991. The most girls given the name in a single year was 450, in 1992. For comparison, it was #1,948 in 2015 and unranked in 1950.
Social Security card records list Rocio in 73 years of the 146 from 1880 to 2025, starting in 1952 with 9 babies. In all, 13,762 US babies have been given the name, 97% of them girls and 3.1% boys. Its busiest decade was the 1990s, with 4,029 babies named Rocio.
Over the 10 years from 2016 to 2025, 693 US girls were named Rocio; the busiest of those years was 2021, with 85. In 2025 that was about 1 in 34,941 of the girls in SSA’s list for the year.
Related spellings in the SSA files include Rosie (86,026 babies since 1880), Rosia (3,506 babies since 1880) and Rosio (2,493 babies since 1880).