How Many People Are Named Terrilyn?
An estimated 776 people in the United States have the first name Terrilyn. It is almost exclusively a female name. The average bearer is 55 years old, and Terrilyn peaked in popularity in 1958 with 60 births that year.
Below you will find a full statistical profile of Terrilyn 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 Terrilyn paired with any surname.
Estimated Living Americans
776
About 1 in 441,694 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
55
years old
Peak Year
1958
60 births
Total Registered
930
since 1880
Gender Distribution for Terrilyn
Terrilyn is almost exclusively a female name. Out of 930 total births registered, 100.0% were female.
Terrilyn as a female name
Ranked #19,359 in 2011
5 female births in 2011
Peak: 1958 (60 births)
Terrilyn: Popularity Over Time
SSA records for Terrilyn span from the 1940s to the 2010s, covering 8 decades of naming data. The most popular decade for this name was the 1960s, when 286 babies were registered. Terrilyn has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Terrilyn by Decade
How has Terrilyn 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.
Terrilyn by State
Birth registrations for Terrilyn span all 8 states and territories in the SSA database. The highest counts are in Louisiana, Michigan, Texas. The lowest are in New York, Mississippi, Florida. On average, about 11 Terrilyns were registered per state.
Terrilyn + Last Name Combinations
How many people share a full name with Terrilyn as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Terrilyn
Other first names starting with T with a similar number of bearers.
Terrilyn: Questions and Answers
How many people in the U.S. are named Terrilyn?
We estimate approximately 776 people named Terrilyn 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 441,694 Americans share this first name.
Is Terrilyn a common name?
Terrilyn is classified as "Very Rare" and is more popular than 88.3% of all first names in the SSA database. A total of 930 births have been registered with this name since 1880.
When was Terrilyn most popular?
Terrilyn reached peak popularity in 1958, when 60 babies were given this name. The average age of a living person named Terrilyn is approximately 55 years old, reflecting when the name was most commonly given.
Is Terrilyn a female name?
Terrilyn is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Terrilyn Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Terrilyn Smith, Terrilyn Johnson, Terrilyn 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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