How Many People Are Named Jill?
An estimated 170,298 people in the United States have the first name Jill. While not in the top 50, it remains a well-known name ranking #322 overall. It is almost exclusively a female name. The average bearer is 57 years old, and Jill peaked in popularity in 1966 with 7,885 births that year.
Below you will find a full statistical profile of Jill 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 Jill paired with any surname.
Key Insights
- While Jill is overwhelmingly female, 501 male births have been registered with this name since 1880.
- Jill has fallen dramatically from its peak in the 1960s. Recent registrations are less than 5% of what they were at the name's height.
Estimated Living Americans
170,298
About 1 in 2,013 people in the U.S.
Rarity
Common
Predicted Gender
Female
99.8% confidence
Average Age
57
years old
Peak Year
1966
7,885 births
Total Registered
208,553
since 1880
Gender Distribution for Jill
Jill is almost exclusively a female name. Out of 208,553 total births registered, 99.8% were female.
Jill as a male name
Ranked #7,507 in 1987
5 male births in 1987
Peak: 1965 (26 births)
Jill as a female name
Ranked #6,246 in 2024
19 female births in 2024
Peak: 1966 (7,870 births)
Jill: Popularity Over Time
SSA records for Jill span from the 1900s to the 2020s, covering 13 decades of naming data. The most popular decade for this name was the 1960s, when 69,310 babies were registered. Jill has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Jill by Decade
How has Jill 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.
Jill by State
Birth registrations for Jill span all 51 states and territories in the SSA database. The highest counts are in New York, California, Illinois. The lowest are in Alaska, Wyoming, Nevada. On average, about 4,027 Jills were registered per state.
Jill + Last Name Combinations
How many people share a full name with Jill as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Jill
Other first names starting with J with a similar number of bearers.
Jill: Questions and Answers
How many people in the U.S. are named Jill?
We estimate approximately 170,298 people named Jill 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 2,013 Americans share this first name.
Is Jill a common name?
Jill is classified as "Common" and is more popular than 99.7% of all first names in the SSA database. A total of 208,553 births have been registered with this name since 1880.
When was Jill most popular?
Jill reached peak popularity in 1966, when 7,885 babies were given this name. The average age of a living person named Jill is approximately 57 years old, reflecting when the name was most commonly given.
Is Jill a female name?
Jill is predominantly female. 99.8% of people with this name are female. See the gender breakdown above for full details.
How many Jill Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Jill Smith, Jill Johnson, Jill 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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