In 2025, 47 US boys were named Jan, making it the 2,731st most common boys’ name of the year, down 533 places from #2,198 in 2024. That is 19 fewer than the 66 boys named Jan in 2024. Its best rank for boys was #247, reached in 1944. The most boys given the name in a single year was 768, in 1954. For comparison, it was #1,685 in 2015 and #267 in 1950.
In 2025, 5 US girls were named Jan, making it the 15,898th most common girls’ name of the year. Its best rank for girls was #131, reached in 1954. The most girls given the name in a single year was 3,201, in 1956. For comparison, it was #12,303 in 2015 and #166 in 1950.
Social Security card records list Jan in 119 years of the 146 from 1880 to 2025, starting in 1902 with 5 babies. In all, 76,934 US babies have been given the name, 71% of them girls and 29% boys. Its busiest decade was the 1950s, with 31,892 babies named Jan.
Over the 10 years from 2016 to 2025, 664 US boys were named Jan; the busiest of those years was 2016, with 84. In 2025 that was about 1 in 36,342 of the boys in SSA’s list for the year.
Among the states, Jan ranked highest in Florida in 2025, at #1,715 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include John (5,204,377 babies since 1880), Jack (759,677 babies since 1880), Joan (488,939 babies since 1880) and Jean (483,475 babies since 1880). Rarer spellings such as Jayon, Jahan and Jayan are summarised on this page.