Quick answers about Jefferey
How many people are named Jefferey?
An estimated 3,385 living Americans are named Jefferey.
How rare is Jefferey?
Jefferey fell below the SSA's 5-birth reporting floor in 2025. It is extremely rare as a new baby name.
How old is the typical Jefferey?
The median age of a living American named Jefferey is approximately 53 years, with most bearers falling between 41 and 61 years old.
Is Jefferey still popular?
Not especially. Jefferey has been declining since its 1969 peak and registered 0 births in 2025.
Where is Jefferey most common?
Jefferey has its strongest geographic signal in California, where it appears 2.0× more often than the national baseline.
1943Peak 19692025
Where it lives now
Jefferey is most concentrated in California — about 1.5× the national rate in the 1980s.
States where Jefferey is given more often than the national average — its present-day heartland.
3×+
2×+
1.5×+
1.2×+
~ national
