How Many People Are Named Onia?
An estimated 22 people in the United States have the first name Onia. It is almost exclusively a female name. The average bearer is 63 years old, and Onia peaked in popularity in 1922 with 8 births that year.
Below you will find a full statistical profile of Onia 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 Onia paired with any surname.
Key Insights
- Onia is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
22
About 1 in 15,579,743 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
63
years old
Peak Year
1922
8 births
Total Registered
92
since 1880
Gender Distribution for Onia
Onia is almost exclusively a female name. Out of 92 total births registered, 100.0% were female.
Onia as a female name
Ranked #19,119 in 2010
5 female births in 2010
Peak: 1922 (8 births)
Onia: Popularity Over Time
SSA records for Onia span from the 1910s to the 2010s, covering 6 decades of naming data. The most popular decade for this name was the 1920s, when 31 babies were registered. Onia has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Onia by Decade
How has Onia 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.
Onia + Last Name Combinations
How many people share a full name with Onia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Onia
Other first names starting with O with a similar number of bearers.
Onia: Questions and Answers
How many people in the U.S. are named Onia?
We estimate approximately 22 people named Onia 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 15,579,743 Americans share this first name.
Is Onia a common name?
Onia is classified as "Very Rare" and is more popular than 41.6% of all first names in the SSA database. A total of 92 births have been registered with this name since 1880.
When was Onia most popular?
Onia reached peak popularity in 1922, when 8 babies were given this name. The average age of a living person named Onia is approximately 63 years old, reflecting when the name was most commonly given.
Is Onia a female name?
Onia is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Onia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Onia Smith, Onia Johnson, Onia 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.
Search for a full name combination
How Many of Me