In 2025, 84 US boys were named Kasper, making it the 1,880th most common boys’ name of the year, down 132 places from #1,748 in 2024. That is 11 fewer than the 95 boys named Kasper in 2024. Its best rank for boys was #1,748, reached in 2024. That year also had the most boys given the name: 95. For comparison, it was #2,422 in 2015 and unranked in 1950.
Social Security card records list Kasper in 49 years of the 146 from 1880 to 2025, starting in 1912 with 5 babies. In all, 1,409 US babies have been given the name, 1.4% of them girls and 99% boys. Its busiest decade was the 2020s, with 516 babies named Kasper.
Over the 10 years from 2016 to 2025, 724 US boys were named Kasper; the busiest of those years was 2024, with 95. In 2025 that was about 1 in 20,334 of the boys in SSA’s list for the year.
Among the states, Kasper ranked highest in Illinois in 2025, at #1,207 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Casper (6,229 babies since 1880) and Kacper (1,102 babies since 1880).