The name is declining in popularity, after it's general peak in the 70's and 60's. This probably suggests the increasingly older average age of someone with this name.
― Anonymous User 6/14/2021
2
In 2018, 48 is the most common age for an American (U.S.) Jeff* who is registered male with the Social Security Administration. It is the 476th most common male first name for living U.S. citizens. *as a first name, not a nickname.
― Anonymous User 10/11/2018
1
The name Jeff was given to 71 boys born in the US in 2015.