In 2025, 1,836 US boys were named Knox, making it the 196th most common boys’ name of the year, up 13 places from #209 in 2024. That is 130 more than the 1,706 boys named Knox in 2024. Its best rank for boys was #196, reached in this year, 2025. The most boys given the name in a single year was 1,902, in 2022. For comparison, it was #258 in 2015 and #2,507 in 1950.
Social Security card records list Knox in 103 years of the 146 from 1880 to 2025, starting in 1881 with 8 babies. In all, 24,382 US babies have been given the name, 1.0% of them girls and 99% boys. Its busiest decade was the 2010s, with 12,170 babies named Knox.
Over the 10 years from 2016 to 2025, 16,943 US boys were named Knox; the busiest of those years was 2022, with 1,902. In 2025 that was about 1 in 930 of the boys in SSA’s list for the year.
Among the states, Knox ranked highest in Nebraska in 2025, at #53 for boys there. It was in the top 100 in 11 states (counting DC).