In 2025, 798 US boys were named Marcelo, making it the 399th most common boys’ name of the year, up 45 places from #444 in 2024. That is 88 more than the 710 boys named Marcelo in 2024. Its best rank for boys was #399, reached in this year, 2025. That year also had the most boys given the name: 798. For comparison, it was #763 in 2015 and #1,307 in 1950.
Social Security card records list Marcelo in 114 years of the 146 from 1880 to 2025, starting in 1907 with 6 babies. In all, 13,231 US babies have been given the name, all of them boys. Its busiest decade was the 2020s, with 3,515 babies named Marcelo.
Over the 10 years from 2016 to 2025, 5,218 US boys were named Marcelo; the busiest of those years was 2025, with 798. In 2025 that was about 1 in 2,140 of the boys in SSA’s list for the year.
Among the states, Marcelo ranked highest in Texas in 2025, at #184 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Marcel (21,123 babies since 1880), Marcelino (7,476 babies since 1880) and Marcello (6,618 babies since 1880). Rarer spellings such as Marcielo and Marselo are summarised on this page.