How Many People Are Named Deloria?
An estimated 232 people in the United States have the first name Deloria. It is almost exclusively a female name. The average bearer is 69 years old, and Deloria peaked in popularity in 1951 with 18 births that year.
Below you will find a full statistical profile of Deloria 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 Deloria paired with any surname.
Key Insights
- With an average bearer age of 69, Deloria is a vintage name most associated with earlier generations. Most living bearers were born before 1967.
Estimated Living Americans
232
About 1 in 1,477,389 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
69
years old
Peak Year
1951
18 births
Total Registered
425
since 1880
Gender Distribution for Deloria
Deloria is almost exclusively a female name. Out of 425 total births registered, 100.0% were female.
Deloria as a female name
Ranked #11,074 in 1985
5 female births in 1985
Peak: 1951 (18 births)
Deloria: Popularity Over Time
SSA records for Deloria span from the 1920s to the 1980s, covering 7 decades of naming data. The most popular decade for this name was the 1940s, when 106 babies were registered. Deloria has declined significantly from its peak in the 1940s. Recent registrations are a fraction of what they were at the name's height.
Deloria by Decade
How has Deloria 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.
Deloria by State
Deloria + Last Name Combinations
How many people share a full name with Deloria as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Deloria
Other first names starting with D with a similar number of bearers.
Deloria: Questions and Answers
How many people in the U.S. are named Deloria?
We estimate approximately 232 people named Deloria 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 1,477,389 Americans share this first name.
Is Deloria a common name?
Deloria is classified as "Very Rare" and is more popular than 76.1% of all first names in the SSA database. A total of 425 births have been registered with this name since 1880.
When was Deloria most popular?
Deloria reached peak popularity in 1951, when 18 babies were given this name. The average age of a living person named Deloria is approximately 69 years old, reflecting when the name was most commonly given.
Is Deloria a female name?
Deloria is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Deloria Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Deloria Smith, Deloria Johnson, Deloria 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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