In 2025, 253 US boys were named Isa, making it the 933rd most common boys’ name of the year, up 91 places from #1,024 in 2024. That is 35 more than the 218 boys named Isa in 2024. Its best rank for boys was #933, reached in this year, 2025. That year also had the most boys given the name: 253. For comparison, it was #1,485 in 2015 and unranked in 1950.
In 2025, 119 US girls were named Isa, making it the 1,717th most common girls’ name of the year, up 256 places from #1,973 in 2024. That is 19 more than the 100 girls named Isa in 2024. Its best rank for girls was #411, reached in 1881. The most girls given the name in a single year was 119, in 2025. For comparison, it was #2,486 in 2015 and #5,611 in 1950.
Social Security card records list Isa in every one of the 146 years from 1880 to 2025; in 1880 there were 5 babies with the name. In all, 6,575 US babies have been given the name, 52% of them girls and 48% boys. Its busiest decade was the 2010s, with 1,820 babies named Isa.
Over the 10 years from 2016 to 2025, 1,544 US boys were named Isa; the busiest of those years was 2025, with 253. In 2025 that was about 1 in 6,751 of the boys in SSA’s list for the year.
Among the states, Isa ranked highest in Virginia in 2025, at #464 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Lisa (970,012 babies since 1880), Isabel (133,977 babies since 1880), Isadora (4,668 babies since 1880) and Issa (3,217 babies since 1880). Rarer spellings such as Izza, Eissa and Eza are summarised on this page.