How Many People Are Named Theldon?
An estimated 2 people in the United States have the first name Theldon. It is almost exclusively a male name. The average bearer is 71 years old, and Theldon peaked in popularity in 1938 with 5 births that year.
Below you will find a full statistical profile of Theldon 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 Theldon paired with any surname.
Key Insights
- With an average bearer age of 71, Theldon is a vintage name most associated with earlier generations. Most living bearers were born before 1965.
- Theldon is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
2
About 1 in 171,377,169 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
71
years old
Peak Year
1938
5 births
Total Registered
5
since 1880
Gender Distribution for Theldon
Theldon is almost exclusively a male name. Out of 5 total births registered, 100.0% were male.
Theldon as a male name
Ranked #3,989 in 1938
5 male births in 1938
Peak: 1938 (5 births)
Theldon: Popularity Over Time
Theldon by Decade
How has Theldon 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1930s | 5 | 5 | 0 | |
Theldon + Last Name Combinations
How many people share a full name with Theldon as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Theldon
Other first names starting with T with a similar number of bearers.
Theldon: Questions and Answers
How many people in the U.S. are named Theldon?
We estimate approximately 2 people named Theldon 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 171,377,169 Americans share this first name.
Is Theldon a common name?
Theldon is classified as "Very Rare" and is more popular than 4.3% of all first names in the SSA database. A total of 5 births have been registered with this name since 1880.
When was Theldon most popular?
Theldon reached peak popularity in 1938, when 5 babies were given this name. The average age of a living person named Theldon is approximately 71 years old, reflecting when the name was most commonly given.
Is Theldon a male name?
Theldon is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Theldon Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Theldon Smith, Theldon Johnson, Theldon 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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