In 2025, 6 US boys were named Kennith, making it the 11,374th most common boys’ name of the year, down 943 places from #10,431 in 2024. That is 1 fewer than the 7 boys named Kennith in 2024. Its best rank for boys was #423, reached in 1940. The most boys given the name in a single year was 234, in 1956. For comparison, it was #13,106 in 2015 and #493 in 1950.
Social Security card records list Kennith in 117 years of the 146 from 1880 to 2025, starting in 1904 with 5 babies. In all, 10,565 US babies have been given the name, all of them boys. Its busiest decade was the 1950s, with 2,064 babies named Kennith.
Over the 10 years from 2016 to 2025, 107 US boys were named Kennith; the busiest of those years was 2018, with 20. In 2025 that was about 1 in 284,679 of the boys in SSA’s list for the year.
Related spellings in the SSA files include Kenneth (1,289,312 babies since 1880).