In 2025, 63 US boys were named Klaus, making it the 2,245th most common boys’ name of the year, up 162 places from #2,407 in 2024. That is 5 more than the 58 boys named Klaus in 2024. Its best rank for boys was #1,353, reached in 1968. The most boys given the name in a single year was 84, in 2022. For comparison, it was #3,002 in 2015 and unranked in 1950.
Social Security card records list Klaus in 70 years of the 146 from 1880 to 2025, starting in 1953 with 7 babies. In all, 1,471 US babies have been given the name, all of them boys. Its busiest decade was the 2020s, with 406 babies named Klaus.
Over the 10 years from 2016 to 2025, 598 US boys were named Klaus; the busiest of those years was 2022, with 84. In 2025 that was about 1 in 27,112 of the boys in SSA’s list for the year.
Among the states, Klaus ranked highest in Pennsylvania in 2025, at #1,178 for boys there. It was not in the top 100 of any state. Rarer spellings such as Claus are summarised on this page.