In 2025, 260 US boys were named Koah, making it the 912th most common boys’ name of the year, up 172 places from #1,084 in 2024. That is 59 more than the 201 boys named Koah in 2024. Its best rank for boys was #912, reached in this year, 2025. That year also had the most boys given the name: 260. For comparison, it was #4,240 in 2015 and unranked in 1950.
In 2025, 51 US girls were named Koah, making it the 3,150th most common girls’ name of the year, up 856 places from #4,006 in 2024. That is 14 more than the 37 girls named Koah in 2024. Its best rank for girls was #3,150, reached in this year, 2025. That year also had the most girls given the name: 51. For comparison, it was unranked (under five girls) in 2015 and unranked in 1950.
Social Security card records list Koah in 20 years of the 146 from 1880 to 2025, starting in 2005 with 6 babies. In all, 1,438 US babies have been given the name, 11% of them girls and 89% boys. Its busiest decade was the 2020s, with 1,093 babies named Koah.
Over the 10 years from 2016 to 2025, 1,131 US boys were named Koah; the busiest of those years was 2025, with 260. In 2025 that was about 1 in 6,570 of the boys in SSA’s list for the year.
Among the states, Koah ranked highest in Louisiana in 2025, at #439 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Koa (8,548 babies since 1880), Koi (1,482 babies since 1880) and Koe (565 babies since 1880).