How Many People Are Named Onyxia?
An estimated 6 people in the United States have the first name Onyxia. It is almost exclusively a female name. The average bearer is 5 years old, and Onyxia peaked in popularity in 2021 with 6 births that year.
Below you will find a full statistical profile of Onyxia as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, state-by-state birth registrations, and, when available, a 2020 Census snapshot showing who had the name at that point in time. You can also check how many people share the full name Onyxia paired with any surname.
Key Insights
- Onyxia is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
6
About 1 in 57,125,723 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
5
years old
Peak Year
2021
6 births
Total Registered
6
since 1880
Gender Distribution for Onyxia
Onyxia is almost exclusively a female name. Out of 6 total births registered, 100.0% were female.
Onyxia as a female name
Ranked #14,802 in 2021
6 female births in 2021
Peak: 2021 (6 births)
Onyxia: Popularity Over Time
Onyxia by Decade
How has Onyxia 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 | |
|---|---|---|---|---|
| 2020s | 6 | 0 | 6 | |
Onyxia + Last Name Combinations
How many people share a full name with Onyxia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Onyxia
Other first names starting with O with a similar number of bearers.
Onyxia: Questions and Answers
How many people in the U.S. are named Onyxia?
We estimate approximately 6 people named Onyxia 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 57,125,723 Americans share this first name.
Is Onyxia a common name?
Onyxia is classified as "Very Rare" and is more popular than 22.3% of all first names in the SSA database. A total of 6 births have been registered with this name since 1880.
When was Onyxia most popular?
Onyxia reached peak popularity in 2021, when 6 babies were given this name. The average age of a living person named Onyxia is approximately 5 years old, reflecting when the name was most commonly given.
What does the SSA popularity chart show?
The popularity chart tracks birth registrations, not people currently alive. It shows how often Onyxia was given to babies from 1880 through 2024, which is why it is the best tool on the page for seeing long-run naming trends.
Is Onyxia a female name?
Onyxia is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
Why can Onyxia have a lot of living bearers even if it is not trendy now?
Because a name can build up a large population over many decades. Onyxia peaked in 2021, and the average living bearer is about 5 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Onyxia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Onyxia Smith, Onyxia Johnson, Onyxia 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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