How Many People Are Named Jilliana?
An estimated 262 people in the United States have the first name Jilliana. It is almost exclusively a female name. The average bearer is 15 years old, and Jilliana peaked in popularity in 2011 with 18 births that year.
Below you will find a full statistical profile of Jilliana 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 Jilliana paired with any surname.
Estimated Living Americans
262
About 1 in 1,308,223 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
15
years old
Peak Year
2011
18 births
Total Registered
265
since 1880
Gender Distribution for Jilliana
Jilliana is almost exclusively a female name. Out of 265 total births registered, 100.0% were female.
Jilliana as a female name
Ranked #11,532 in 2024
8 female births in 2024
Peak: 2011 (18 births)
Jilliana: Popularity Over Time
SSA records for Jilliana span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2010s, when 123 babies were registered. Jilliana has declined significantly from its peak in the 2010s. Recent registrations are a fraction of what they were at the name's height.
Jilliana by Decade
How has Jilliana 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.
Jilliana by State
Jilliana + Last Name Combinations
How many people share a full name with Jilliana as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Jilliana
Other first names starting with J with a similar number of bearers.
Jilliana: Questions and Answers
How many people in the U.S. are named Jilliana?
We estimate approximately 262 people named Jilliana 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 1,308,223 Americans share this first name.
Is Jilliana a common name?
Jilliana is classified as "Very Rare" and is more popular than 77.7% of all first names in the SSA database. A total of 265 births have been registered with this name since 1880.
When was Jilliana most popular?
Jilliana reached peak popularity in 2011, when 18 babies were given this name. The average age of a living person named Jilliana is approximately 15 years old, reflecting when the name was most commonly given.
Is Jilliana a female name?
Jilliana is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Jilliana Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Jilliana Smith, Jilliana Johnson, Jilliana 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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