How Many People Are Named Thirza?
An estimated 22 people in the United States have the first name Thirza. It is almost exclusively a female name. The average bearer is 73 years old, and Thirza peaked in popularity in 1917 with 20 births that year.
Below you will find a full statistical profile of Thirza 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 Thirza paired with any surname.
Key Insights
- With an average bearer age of 73, Thirza is a vintage name most associated with earlier generations. Most living bearers were born before 1963.
- Thirza is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
22
About 1 in 15,579,743 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
73
years old
Peak Year
1917
20 births
Total Registered
207
since 1880
Gender Distribution for Thirza
Thirza is almost exclusively a female name. Out of 207 total births registered, 100.0% were female.
Thirza as a female name
Ranked #10,312 in 1981
6 female births in 1981
Peak: 1917 (20 births)
Thirza: Popularity Over Time
SSA records for Thirza span from the 1880s to the 1980s, covering 9 decades of naming data. The most popular decade for this name was the 1920s, when 59 babies were registered. Thirza has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Thirza by Decade
How has Thirza 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.
Thirza + Last Name Combinations
How many people share a full name with Thirza as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Thirza
Other first names starting with T with a similar number of bearers.
Thirza: Questions and Answers
How many people in the U.S. are named Thirza?
We estimate approximately 22 people named Thirza 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 15,579,743 Americans share this first name.
Is Thirza a common name?
Thirza is classified as "Very Rare" and is more popular than 41.6% of all first names in the SSA database. A total of 207 births have been registered with this name since 1880.
When was Thirza most popular?
Thirza reached peak popularity in 1917, when 20 babies were given this name. The average age of a living person named Thirza is approximately 73 years old, reflecting when the name was most commonly given.
Is Thirza a female name?
Thirza is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Thirza Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Thirza Smith, Thirza Johnson, Thirza 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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