How Many People Are Named Theodosia?
An estimated 537 people in the United States have the first name Theodosia. It is almost exclusively a female name. The average bearer is 45 years old, and Theodosia peaked in popularity in 1918 with 45 births that year.
Below you will find a full statistical profile of Theodosia 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 Theodosia paired with any surname.
Estimated Living Americans
537
About 1 in 638,276 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
45
years old
Peak Year
1918
45 births
Total Registered
1,669
since 1880
Gender Distribution for Theodosia
Theodosia is almost exclusively a female name. Out of 1,669 total births registered, 100.0% were female.
Theodosia as a female name
Ranked #4,864 in 2024
28 female births in 2024
Peak: 1918 (45 births)
Theodosia: Popularity Over Time
SSA records for Theodosia span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1920s, when 300 babies were registered. While Theodosia is less common than at its peak in the 1920s, it remains a well-established name with steady registrations.
Theodosia by Decade
How has Theodosia 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.
Theodosia by State
Birth registrations for Theodosia span all 7 states and territories in the SSA database. The highest counts are in Pennsylvania, North Carolina, Michigan. The lowest are in West Virginia, Indiana, Georgia. On average, about 13 Theodosias were registered per state.
Theodosia + Last Name Combinations
How many people share a full name with Theodosia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Theodosia
Other first names starting with T with a similar number of bearers.
Theodosia: Questions and Answers
How many people in the U.S. are named Theodosia?
We estimate approximately 537 people named Theodosia 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 638,276 Americans share this first name.
Is Theodosia a common name?
Theodosia is classified as "Very Rare" and is more popular than 85.2% of all first names in the SSA database. A total of 1,669 births have been registered with this name since 1880.
When was Theodosia most popular?
Theodosia reached peak popularity in 1918, when 45 babies were given this name. The average age of a living person named Theodosia is approximately 45 years old, reflecting when the name was most commonly given.
Is Theodosia a female name?
Theodosia is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Theodosia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Theodosia Smith, Theodosia Johnson, Theodosia 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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