How Many People Are Named Jil?
An estimated 434 people in the United States have the first name Jil. It is almost exclusively a female name. The average bearer is 62 years old, and Jil peaked in popularity in 1957 with 36 births that year.
Below you will find a full statistical profile of Jil 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 Jil paired with any surname.
Estimated Living Americans
434
About 1 in 789,757 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
62
years old
Peak Year
1957
36 births
Total Registered
559
since 1880
Gender Distribution for Jil
Jil is almost exclusively a female name. Out of 559 total births registered, 100.0% were female.
Jil as a female name
Ranked #16,625 in 2002
5 female births in 2002
Peak: 1957 (36 births)
Jil: Popularity Over Time
SSA records for Jil span from the 1940s to the 2000s, covering 7 decades of naming data. The most popular decade for this name was the 1960s, when 208 babies were registered. Jil has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Jil by Decade
How has Jil 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.
Jil by State
Jil + Last Name Combinations
How many people share a full name with Jil as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Jil
Other first names starting with J with a similar number of bearers.
Jil: Questions and Answers
How many people in the U.S. are named Jil?
We estimate approximately 434 people named Jil 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 789,757 Americans share this first name.
Is Jil a common name?
Jil is classified as "Very Rare" and is more popular than 83.2% of all first names in the SSA database. A total of 559 births have been registered with this name since 1880.
When was Jil most popular?
Jil reached peak popularity in 1957, when 36 babies were given this name. The average age of a living person named Jil is approximately 62 years old, reflecting when the name was most commonly given.
Is Jil a female name?
Jil is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Jil Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Jil Smith, Jil Johnson, Jil 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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