How Many People Are Named Letha?
An estimated 4,787 people in the United States have the first name Letha. It is almost exclusively a female name. The average bearer is 67 years old, and Letha peaked in popularity in 1918 with 473 births that year.
Below you will find a full statistical profile of Letha 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 Letha paired with any surname.
Key Insights
- With an average bearer age of 67, Letha is a vintage name most associated with earlier generations. Most living bearers were born before 1969.
Estimated Living Americans
4,787
About 1 in 71,601 people in the U.S.
Rarity
Rare
Predicted Gender
Female
99.9% confidence
Average Age
67
years old
Peak Year
1918
473 births
Total Registered
19,162
since 1880
Gender Distribution for Letha
Letha is almost exclusively a female name. Out of 19,162 total births registered, 99.9% were female.
Letha as a male name
Ranked #4,603 in 1923
5 male births in 1923
Peak: 1920 (8 births)
Letha as a female name
Ranked #16,499 in 2020
5 female births in 2020
Peak: 1918 (473 births)
Letha: Popularity Over Time
SSA records for Letha span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1920s, when 3,780 babies were registered. Letha has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Letha by Decade
How has Letha 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.
Letha by State
Birth registrations for Letha span all 33 states and territories in the SSA database. The highest counts are in Texas, North Carolina, Oklahoma. The lowest are in South Dakota, Maine, Wisconsin. On average, about 386 Lethas were registered per state.
Letha + Last Name Combinations
How many people share a full name with Letha as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Letha
Other first names starting with L with a similar number of bearers.
Letha: Questions and Answers
How many people in the U.S. are named Letha?
We estimate approximately 4,787 people named Letha 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 71,601 Americans share this first name.
Is Letha a common name?
Letha is classified as "Rare" and is more popular than 96.4% of all first names in the SSA database. A total of 19,162 births have been registered with this name since 1880.
When was Letha most popular?
Letha reached peak popularity in 1918, when 473 babies were given this name. The average age of a living person named Letha is approximately 67 years old, reflecting when the name was most commonly given.
Is Letha a female name?
Letha is predominantly female. 99.9% of people with this name are female. See the gender breakdown above for full details.
How many Letha Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Letha Smith, Letha Johnson, Letha 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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