How Many People Are Named Jefferey?
An estimated 3,543 people in the United States have the first name Jefferey. It is almost exclusively a male name. The average bearer is 51 years old, and Jefferey peaked in popularity in 1969 with 141 births that year.
Below you will find a full statistical profile of Jefferey as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Jefferey paired with any surname.
Estimated Living Americans
3,543
About 1 in 96,741 people in the U.S.
Rarity
Rare
Predicted Gender
Male
100.0% confidence
Average Age
51
years old
Peak Year
1969
141 births
Total Registered
3,973
since 1880
Gender Distribution for Jefferey
Jefferey is almost exclusively a male name. Out of 3,973 total births registered, 100.0% were male.
Jefferey as a male name
Ranked #9,246 in 2019
8 male births in 2019
Peak: 1969 (141 births)
Jefferey: Popularity Over Time
SSA records for Jefferey span from the 1940s to the 2010s, covering 8 decades of naming data. The most popular decade for this name was the 1960s, when 1,118 babies were registered. Jefferey has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Jefferey by Decade
How has Jefferey tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Jefferey by State
Birth registrations for Jefferey span all 22 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in South Carolina, Massachusetts, Colorado. On average, about 68 Jeffereys were registered per state.
Jefferey + Last Name Combinations
How many people share a full name with Jefferey as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Jefferey
Other first names starting with J with a similar number of bearers.
Jefferey: Questions and Answers
How many people in the U.S. are named Jefferey?
We estimate approximately 3,543 people named Jefferey are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 96,741 Americans share this first name.
Is Jefferey a common name?
Jefferey is classified as "Rare" and is more popular than 95.7% of all first names in the SSA database. A total of 3,973 births have been registered with this name since 1880.
When was Jefferey most popular?
Jefferey reached peak popularity in 1969, when 141 babies were given this name. The average age of a living person named Jefferey is approximately 51 years old, reflecting when the name was most commonly given.
Is Jefferey a male name?
Jefferey is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Jefferey Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Jefferey Smith, Jefferey Johnson, Jefferey Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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