How Many People Are Named Theda?
An estimated 1,431 people in the United States have the first name Theda. It is almost exclusively a female name. The average bearer is 70 years old, and Theda peaked in popularity in 1919 with 356 births that year.
Below you will find a full statistical profile of Theda 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 Theda paired with any surname.
Key Insights
- With an average bearer age of 70, Theda is a vintage name most associated with earlier generations. Most living bearers were born before 1966.
Estimated Living Americans
1,431
About 1 in 239,521 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
70
years old
Peak Year
1919
356 births
Total Registered
6,556
since 1880
Gender Distribution for Theda
Theda is almost exclusively a female name. Out of 6,556 total births registered, 100.0% were female.
Theda as a female name
Ranked #17,444 in 2021
5 female births in 2021
Peak: 1919 (356 births)
Theda: Popularity Over Time
SSA records for Theda span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1920s, when 1,981 babies were registered. Theda has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Theda by Decade
How has Theda 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.
Theda by State
Birth registrations for Theda span all 36 states and territories in the SSA database. The highest counts are in Texas, Pennsylvania, Oklahoma. The lowest are in South Carolina, Oregon, Montana. On average, about 98 Thedas were registered per state.
Theda + Last Name Combinations
How many people share a full name with Theda as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Theda
Other first names starting with T with a similar number of bearers.
Theda: Questions and Answers
How many people in the U.S. are named Theda?
We estimate approximately 1,431 people named Theda 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 239,521 Americans share this first name.
Is Theda a common name?
Theda is classified as "Rare" and is more popular than 92.2% of all first names in the SSA database. A total of 6,556 births have been registered with this name since 1880.
When was Theda most popular?
Theda reached peak popularity in 1919, when 356 babies were given this name. The average age of a living person named Theda is approximately 70 years old, reflecting when the name was most commonly given.
Is Theda a female name?
Theda is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Theda Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Theda Smith, Theda Johnson, Theda 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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