In 2025, 59 US boys were named Gregorio, making it the 2,336th most common boys’ name of the year, up 274 places from #2,610 in 2024. That is 8 more than the 51 boys named Gregorio in 2024. Its best rank for boys was #583, reached in 1929. The most boys given the name in a single year was 187, in 1993. For comparison, it was #1,989 in 2015 and #809 in 1950.
Social Security card records list Gregorio in 135 years of the 146 from 1880 to 2025, starting in 1880 with 5 babies. In all, 10,847 US babies have been given the name, all of them boys. Its busiest decade was the 1990s, with 1,602 babies named Gregorio.
Over the 10 years from 2016 to 2025, 599 US boys were named Gregorio; the busiest of those years was 2016, with 75. In 2025 that was about 1 in 28,950 of the boys in SSA’s list for the year.
Among the states, Gregorio ranked highest in California in 2025, at #1,266 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Gregory (714,753 babies since 1880) and Gregoria (2,263 babies since 1880). Rarer spellings such as Gregario are summarised on this page.