The story of Hilary
Hilary is rare for girls in the United States, ranked #5,301 in 2025 with 24 babies given the name. It is currently declining compared with a decade ago.
Since 1882, 26,368 American babies have been named Hilary, about 92% girls and 8% boys, making it a genuinely unisex name. Its peak came in 1990, when 1,225 newborns received the name, the signature sound of the 1990s.
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 Hilary stood among all girls' names in any year, or use the compare tool to plot it against other names.