How Many People Are Named Duff?
An estimated 299 people in the United States have the first name Duff. It is almost exclusively a male name. The average bearer is 66 years old, and Duff peaked in popularity in 1954 with 34 births that year.
Below you will find a full statistical profile of Duff 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 Duff paired with any surname.
Key Insights
- With an average bearer age of 66, Duff is a vintage name most associated with earlier generations. Most living bearers were born before 1970.
Estimated Living Americans
299
About 1 in 1,146,336 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
66
years old
Peak Year
1954
34 births
Total Registered
441
since 1880
Gender Distribution for Duff
Duff is almost exclusively a male name. Out of 441 total births registered, 100.0% were male.
Duff as a male name
Ranked #11,462 in 2008
6 male births in 2008
Peak: 1954 (34 births)
Duff: Popularity Over Time
SSA records for Duff span from the 1880s to the 2000s, covering 9 decades of naming data. The most popular decade for this name was the 1950s, when 177 babies were registered. Duff has declined significantly from its peak in the 1950s. Recent registrations are a fraction of what they were at the name's height.
Duff by Decade
How has Duff 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.
Duff by State
Duff + Last Name Combinations
How many people share a full name with Duff as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Duff
Other first names starting with D with a similar number of bearers.
Duff: Questions and Answers
How many people in the U.S. are named Duff?
We estimate approximately 299 people named Duff 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 1,146,336 Americans share this first name.
Is Duff a common name?
Duff is classified as "Very Rare" and is more popular than 79.2% of all first names in the SSA database. A total of 441 births have been registered with this name since 1880.
When was Duff most popular?
Duff reached peak popularity in 1954, when 34 babies were given this name. The average age of a living person named Duff is approximately 66 years old, reflecting when the name was most commonly given.
Is Duff a male name?
Duff is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Duff Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Duff Smith, Duff Johnson, Duff 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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