How Many People Are Named Denni?
An estimated 194 people in the United States have the first name Denni. It is predominantly female (92.9%). The average bearer is 36 years old, and Denni peaked in popularity in 1975 with 14 births that year.
Below you will find a full statistical profile of Denni 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 Denni paired with any surname.
Estimated Living Americans
194
About 1 in 1,766,775 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
92.9% confidence
Average Age
36
years old
Peak Year
1975
14 births
Total Registered
212
since 1880
Gender Distribution for Denni
Denni is predominantly female (92.9%), though 15 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Denni as a male name
Ranked #13,003 in 2008
5 male births in 2008
Peak: 1957 (5 births)
Denni as a female name
Ranked #10,454 in 2024
9 female births in 2024
Peak: 1975 (14 births)
Denni: Popularity Over Time
SSA records for Denni span from the 1950s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 1970s, when 74 babies were registered. While Denni is less common than at its peak in the 1970s, it remains a well-established name with steady registrations.
Denni by Decade
How has Denni 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.
Denni + Last Name Combinations
How many people share a full name with Denni as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Denni
Other first names starting with D with a similar number of bearers.
Denni: Questions and Answers
How many people in the U.S. are named Denni?
We estimate approximately 194 people named Denni 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 1,766,775 Americans share this first name.
Is Denni a common name?
Denni is classified as "Very Rare" and is more popular than 73.8% of all first names in the SSA database. A total of 212 births have been registered with this name since 1880.
When was Denni most popular?
Denni reached peak popularity in 1975, when 14 babies were given this name. The average age of a living person named Denni is approximately 36 years old, reflecting when the name was most commonly given.
Is Denni a female name?
Denni is predominantly female. 92.9% of people with this name are female. See the gender breakdown above for full details.
How many Denni Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Denni Smith, Denni Johnson, Denni 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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