How Many People Are Named Thereasa?
An estimated 267 people in the United States have the first name Thereasa. It is almost exclusively a female name. The average bearer is 62 years old, and Thereasa peaked in popularity in 1958 with 17 births that year.
Below you will find a full statistical profile of Thereasa 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 Thereasa paired with any surname.
Estimated Living Americans
267
About 1 in 1,283,724 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
62
years old
Peak Year
1958
17 births
Total Registered
345
since 1880
Gender Distribution for Thereasa
Thereasa is almost exclusively a female name. Out of 345 total births registered, 100.0% were female.
Thereasa as a female name
Ranked #9,164 in 1982
7 female births in 1982
Peak: 1958 (17 births)
Thereasa: Popularity Over Time
SSA records for Thereasa span from the 1920s to the 1980s, covering 6 decades of naming data. The most popular decade for this name was the 1960s, when 131 babies were registered. Thereasa has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Thereasa by Decade
How has Thereasa 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.
Thereasa + Last Name Combinations
How many people share a full name with Thereasa as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Thereasa
Other first names starting with T with a similar number of bearers.
Thereasa: Questions and Answers
How many people in the U.S. are named Thereasa?
We estimate approximately 267 people named Thereasa 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 1,283,724 Americans share this first name.
Is Thereasa a common name?
Thereasa is classified as "Very Rare" and is more popular than 77.9% of all first names in the SSA database. A total of 345 births have been registered with this name since 1880.
When was Thereasa most popular?
Thereasa reached peak popularity in 1958, when 17 babies were given this name. The average age of a living person named Thereasa is approximately 62 years old, reflecting when the name was most commonly given.
Is Thereasa a female name?
Thereasa is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Thereasa Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Thereasa Smith, Thereasa Johnson, Thereasa 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.
Search for a full name combination
How Many of Me