In 2025, 88 US boys were named Isidro, making it the 1,815th most common boys’ name of the year, down 60 places from #1,755 in 2024. That is 6 fewer than the 94 boys named Isidro in 2024. Its best rank for boys was #787, reached in 1984. The most boys given the name in a single year was 160, in 2000. For comparison, it was #1,922 in 2015 and #875 in 1950.
Social Security card records list Isidro in 117 years of the 146 from 1880 to 2025, starting in 1885 with 5 babies. In all, 8,211 US babies have been given the name, all of them boys. Its busiest decade was the 2000s, with 1,368 babies named Isidro.
Over the 10 years from 2016 to 2025, 773 US boys were named Isidro; the busiest of those years was 2024, with 94. In 2025 that was about 1 in 19,410 of the boys in SSA’s list for the year.
Among the states, Isidro ranked highest in Texas in 2025, at #862 for boys there. It was not in the top 100 of any state. Rarer spellings such as Ysidro and Isidoro are summarised on this page.