In 2025, 30 US boys were named Gustav, making it the 3,686th most common boys’ name of the year, down 335 places from #3,351 in 2024. That is 5 fewer than the 35 boys named Gustav in 2024. Its best rank for boys was #242, reached in 1883. The most boys given the name in a single year was 99, in 1917. For comparison, it was #4,337 in 2015 and #1,512 in 1950.
Social Security card records list Gustav in every one of the 146 years from 1880 to 2025; in 1880 there were 33 babies with the name. In all, 4,267 US babies have been given the name, all of them boys. Its busiest decade was the 1910s, with 723 babies named Gustav.
Over the 10 years from 2016 to 2025, 338 US boys were named Gustav; the busiest of those years was 2019, with 45. In 2025 that was about 1 in 56,936 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Gustavo (40,461 babies since 1880), Gus (20,124 babies since 1880) and Gustave (5,430 babies since 1880).