In 2025, 26 US boys were named Arnoldo, making it the 4,057th most common boys’ name of the year, down 443 places from #3,614 in 2024. That is 5 fewer than the 31 boys named Arnoldo in 2024. Its best rank for boys was #868, reached in 1967. The most boys given the name in a single year was 94, in 1992. For comparison, it was #4,086 in 2015 and #1,168 in 1950.
Social Security card records list Arnoldo in 104 years of the 146 from 1880 to 2025, starting in 1914 with 6 babies. In all, 4,713 US babies have been given the name, all of them boys. Its busiest decade was the 1990s, with 834 babies named Arnoldo.
Over the 10 years from 2016 to 2025, 241 US boys were named Arnoldo; the busiest of those years was 2017, with 32. In 2025 that was about 1 in 65,695 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Arnaldo (2,083 babies since 1880).