How Many People Are Named Billi?
An estimated 1,544 people in the United States have the first name Billi. It is almost exclusively a female name. The average bearer is 48 years old, and Billi peaked in popularity in 1976 with 84 births that year.
Below you will find a full statistical profile of Billi 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 Billi paired with any surname.
Estimated Living Americans
1,544
About 1 in 221,991 people in the U.S.
Rarity
Rare
Predicted Gender
Female
99.7% confidence
Average Age
48
years old
Peak Year
1976
84 births
Total Registered
1,745
since 1880
Gender Distribution for Billi
Billi is almost exclusively a female name. Out of 1,745 total births registered, 99.7% were female.
Billi as a male name
Ranked #12,255 in 2006
5 male births in 2006
Peak: 2006 (5 births)
Billi as a female name
Ranked #13,727 in 2020
6 female births in 2020
Peak: 1976 (84 births)
Billi: Popularity Over Time
SSA records for Billi span from the 1910s to the 2020s, covering 10 decades of naming data. The most popular decade for this name was the 1970s, when 643 babies were registered. Billi has declined significantly from its peak in the 1970s. Recent registrations are a fraction of what they were at the name's height.
Billi by Decade
How has Billi 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.
Billi by State
Birth registrations for Billi span all 12 states and territories in the SSA database. The highest counts are in Ohio, Pennsylvania, Iowa. The lowest are in West Virginia, Illinois, California. On average, about 19 Billis were registered per state.
Billi + Last Name Combinations
How many people share a full name with Billi as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Billi
Other first names starting with B with a similar number of bearers.
Billi: Questions and Answers
How many people in the U.S. are named Billi?
We estimate approximately 1,544 people named Billi 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 221,991 Americans share this first name.
Is Billi a common name?
Billi is classified as "Rare" and is more popular than 92.6% of all first names in the SSA database. A total of 1,745 births have been registered with this name since 1880.
When was Billi most popular?
Billi reached peak popularity in 1976, when 84 babies were given this name. The average age of a living person named Billi is approximately 48 years old, reflecting when the name was most commonly given.
Is Billi a female name?
Billi is predominantly female. 99.7% of people with this name are female. See the gender breakdown above for full details.
How many Billi Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Billi Smith, Billi Johnson, Billi 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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