In 2025, 33 US girls were named Seneca, making it the 4,343rd most common girls’ name of the year, up 932 places from #5,275 in 2024. That is 8 more than the 25 girls named Seneca in 2024. Its best rank for girls was #2,059, reached in 1980. The most girls given the name in a single year was 53, in 1995. For comparison, it was #4,394 in 2015 and unranked in 1950.
In 2025, 16 US boys were named Seneca, making it the 5,808th most common boys’ name of the year, down 955 places from #4,853 in 2024. That is 5 fewer than the 21 boys named Seneca in 2024. Its best rank for boys was #633, reached in 1977. That year also had the most boys given the name: 179. For comparison, it was #5,254 in 2015 and unranked in 1950.
Social Security card records list Seneca in 61 years of the 146 from 1880 to 2025, starting in 1956 with 10 babies. In all, 3,523 US babies have been given the name, 50% of them girls and 50% boys. Its busiest decade was the 1980s, with 779 babies named Seneca.
Over the 10 years from 2016 to 2025, 291 US girls were named Seneca; the busiest of those years was 2021, with 37. In 2025 that was about 1 in 48,705 of the girls in SSA’s list for the year.
Rarer spellings such as Senica, Senaca and Senika are summarised on this page.