An estimated 21,880 living Americans are named Hilary.
How rare is Hilary?
Hilary is very rare among babies today, with 24 girls receiving the name in 2025, down 98% from its 1990 peak.
How old is the typical Hilary?
The median age of a living American named Hilary is approximately 41 years, with most bearers falling between 36 and 49 years old.
Is Hilary still popular?
No. Hilary is endangered as a baby name, down 98% from its 1990 peak with 24 births in 2025.
Where is Hilary most common?
Hilary has its strongest geographic signal in Idaho, where it appears 3.5× more often than the national baseline.
1914Peak 19902025
Peak year
1990
Decline from peak
98%
2025
24
All-time
24,171
Diaspora map
Hilary broke out in Colorado, Idaho, Iowa, Maine, Massachusetts, Montana, New Hampshire, Oregon, South Dakota, Utah, and Vermont (1978) and became over-represented in 32 states over 11 years.
Broke out: Colorado, Idaho, Iowa, Maine, Massachusetts, Montana, New Hampshire, Oregon, South Dakota, Utah, and Vermont, 1978 · over-represented in 32 states over 11 years
