How Many People Are Named Onterrio?
An estimated 35 people in the United States have the first name Onterrio. It is almost exclusively a male name. The average bearer is 29 years old, and Onterrio peaked in popularity in 2005 with 8 births that year.
Below you will find a full statistical profile of Onterrio 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 Onterrio paired with any surname.
Key Insights
- Onterrio is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
35
About 1 in 9,792,981 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
29
years old
Peak Year
2005
8 births
Total Registered
36
since 1880
Gender Distribution for Onterrio
Onterrio is almost exclusively a male name. Out of 36 total births registered, 100.0% were male.
Onterrio as a male name
Ranked #8,885 in 2005
8 male births in 2005
Peak: 2005 (8 births)
Onterrio: Popularity Over Time
SSA records for Onterrio span from the 1980s to the 2000s, covering 3 decades of naming data. The most popular decade for this name was the 2000s, when 18 babies were registered. Onterrio remains highly popular today, with recent registration numbers near its historical peak.
Onterrio by Decade
How has Onterrio 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.
Onterrio + Last Name Combinations
How many people share a full name with Onterrio as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Onterrio
Other first names starting with O with a similar number of bearers.
Onterrio: Questions and Answers
How many people in the U.S. are named Onterrio?
We estimate approximately 35 people named Onterrio 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 9,792,981 Americans share this first name.
Is Onterrio a common name?
Onterrio is classified as "Very Rare" and is more popular than 48.9% of all first names in the SSA database. A total of 36 births have been registered with this name since 1880.
When was Onterrio most popular?
Onterrio reached peak popularity in 2005, when 8 babies were given this name. The average age of a living person named Onterrio is approximately 29 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 Onterrio 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 Onterrio a male name?
Onterrio is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
Why can Onterrio 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. Onterrio peaked in 2005, and the average living bearer is about 29 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Onterrio Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Onterrio Smith, Onterrio Johnson, Onterrio 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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