How Many People Are Named Theodosia Smith?

There are approximately 4 people named Theodosia Smith living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 85,688,585 Americans.

This estimate combines SSA birth records for the first name Theodosia with Census Bureau frequency data for the surname Smith. Below you will find a breakdown of both names, including popularity trends, gender data, and Census background data where it is available.

Estimated People with This Name

1 in 85,688,585 Americans

Combination Rarity

Very Rare

Very Rare Very Common

First Name

Theodosia

Last Name

Smith

Est. Bearers 2,717,332

Census Rank #1

Per 100K 792.79

Rarity Very Common

Theodosia: Popularity Over Time

Year-by-year SSA birth registrations for the first name Theodosia. The peak year was 1918 with 45 births. The average person named Theodosia today is 45 years old.

Ancestry of the First Name Theodosia

In the 2020 Census, the first name Theodosia was most commonly recorded among people who identified as White (49.16%). The next largest recorded groups were Black (43.03%) and Hispanic (3.06%).

These percentages describe the people who had the first name Theodosia in the 2020 Census. They do not tell you the deeper origin or meaning of the name itself.

Read this as a snapshot of who already had the name in 2020, not as a trend line. The SSA chart above is still the better way to see how Theodosia rose or fell over time.

White

49.16%

Black

43.03%

Hispanic

3.06%

Asian/Pacific Islander

1.68%

American Indian/Alaska Native

0.15%

Two or More Races

2.91%

Ancestry of the Smith Surname

The surname Smith was most commonly recorded among people who identified as White in the 2020 Census.

This is a self-reported race and ethnicity breakdown for people who had the surname Smith in the published Census surname tables. It gives useful context around who was recorded with the name, but it does not tell the full family history of every Boone line.

White

67.99%

Black

22.62%

Hispanic

3.50%

Asian/Pacific Islander

0.68%

American Indian/Alaska Native

0.83%

Two or More Races

4.37%

How we calculated this

The first name "Theodosia" has an estimated frequency of < 0.0001% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.

The surname "Smith" appears at a rate of 792.79 per 100,000 people in the 2020 U.S. Census.

We do not use the Census first-name snapshot for the main estimate because it is only published once every 10 years. The latest public first-name Census file is from 2020, which is already 6 years old. SSA birth records plus CDC survival data give a better current estimate of how many people with the first name Theodosia are likely to be alive now.

Multiplying these frequencies against the U.S. population of ~343 million gives 4 estimated people. This assumes first names and last names are statistically independent. Full methodology.

Other people named Theodosia

Theodosia Johnson Theodosia Williams Theodosia Brown Theodosia Garcia Theodosia Jones

Other people with the surname Smith

Michael Smith James Smith John Smith David Smith Robert Smith William Smith Christopher Smith Joseph Smith

Theodosia Smith: Questions and Answers

How many people are named Theodosia Smith?

We estimate approximately 4 people named Theodosia Smith are alive in the United States today. The first name Theodosia is shared by 537 Americans, and the surname Smith is shared by 2,717,332.

How rare is the name Theodosia Smith?

This name combination is classified as Very Rare, occurring at a rate of about 1 in 85,688,585 Americans. The first name Theodosia is very rare and the surname Smith is very common.

Is Theodosia a male or female name?

Theodosia is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 1918 and the average bearer today is 45 years old.

What does the Census say about the first name Theodosia?

In the 2020 Census, the first name Theodosia was most commonly recorded among people who identified as White (49.16%). The next largest recorded groups were Black (43.03%) and Hispanic (3.06%). These percentages describe the people who had the name in the 2020 Census, not the deeper origin of the name itself.

Where does this data come from?

First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. When available, first-name Census background data comes from the 2020 U.S. Census Bureau first-name tables. Surname data comes from the 2020 U.S. Census Bureau. Full methodology.

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