How Many People Are Named Milli?
An estimated 418 people in the United States have the first name Milli. It is almost exclusively a female name. The average bearer is 10 years old, and Milli peaked in popularity in 2022 with 39 births that year.
Below you will find a full statistical profile of Milli 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 Milli paired with any surname.
Estimated Living Americans
418
About 1 in 819,986 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
10
years old
Peak Year
2022
39 births
Total Registered
421
since 1880
Gender Distribution for Milli
Milli is almost exclusively a female name. Out of 421 total births registered, 100.0% were female.
Milli as a female name
Ranked #5,377 in 2024
24 female births in 2024
Peak: 2022 (39 births)
Milli: Popularity Over Time
SSA records for Milli span from the 2000s to the 2020s, covering 3 decades of naming data. The most popular decade for this name was the 2010s, when 208 babies were registered. While Milli is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Milli by Decade
How has Milli 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.
Milli by State
Milli + Last Name Combinations
How many people share a full name with Milli as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Milli
Other first names starting with M with a similar number of bearers.
Milli: Questions and Answers
How many people in the U.S. are named Milli?
We estimate approximately 418 people named Milli 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 819,986 Americans share this first name.
Is Milli a common name?
Milli is classified as "Very Rare" and is more popular than 82.8% of all first names in the SSA database. A total of 421 births have been registered with this name since 1880.
When was Milli most popular?
Milli reached peak popularity in 2022, when 39 babies were given this name. The average age of a living person named Milli is approximately 10 years old, reflecting when the name was most commonly given.
Is Milli a female name?
Milli is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Milli Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Milli Smith, Milli Johnson, Milli 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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