How Many People Are Named Jennilyn?
An estimated 319 people in the United States have the first name Jennilyn. It is almost exclusively a female name. The average bearer is 39 years old, and Jennilyn peaked in popularity in 1983 with 21 births that year.
Below you will find a full statistical profile of Jennilyn 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 Jennilyn paired with any surname.
Estimated Living Americans
319
About 1 in 1,074,465 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
39
years old
Peak Year
1983
21 births
Total Registered
340
since 1880
Gender Distribution for Jennilyn
Jennilyn is almost exclusively a female name. Out of 340 total births registered, 100.0% were female.
Jennilyn as a female name
Ranked #12,764 in 2021
7 female births in 2021
Peak: 1983 (21 births)
Jennilyn: Popularity Over Time
SSA records for Jennilyn span from the 1960s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 1980s, when 126 babies were registered. Jennilyn has declined significantly from its peak in the 1980s. Recent registrations are a fraction of what they were at the name's height.
Jennilyn by Decade
How has Jennilyn 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.
Jennilyn by State
Jennilyn + Last Name Combinations
How many people share a full name with Jennilyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Jennilyn
Other first names starting with J with a similar number of bearers.
Jennilyn: Questions and Answers
How many people in the U.S. are named Jennilyn?
We estimate approximately 319 people named Jennilyn 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 1,074,465 Americans share this first name.
Is Jennilyn a common name?
Jennilyn is classified as "Very Rare" and is more popular than 79.9% of all first names in the SSA database. A total of 340 births have been registered with this name since 1880.
When was Jennilyn most popular?
Jennilyn reached peak popularity in 1983, when 21 babies were given this name. The average age of a living person named Jennilyn is approximately 39 years old, reflecting when the name was most commonly given.
Is Jennilyn a female name?
Jennilyn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Jennilyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Jennilyn Smith, Jennilyn Johnson, Jennilyn 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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