The story of Seneca
Seneca is rare for girls in the United States, ranked #4,343 in 2025 with 33 babies given the name. It is currently holding steady compared with a decade ago.
Since 1956, 3,523 American babies have been named Seneca, about 50% girls and 50% boys, making it a genuinely unisex name. Its peak came in 1977, when 219 newborns received the name, the signature sound of the 1970s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Seneca stood among all girls' names in any year, or use the compare tool to plot it against other names.