Onix
Derived from the Greek word "onyx" referring to a precious stone.
Name Census estimates that about 345 living Americans carry the first name Onix. It is a predominantly male name (98.3% of registrations). The average person named Onix today is around 18 years old, and the year with the single highest number of Onix births was 2022 (32 babies).
This page is the full Name Census profile for Onix. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
People living today
345
~ 1 in 993,491 Americans
Peak year
2022
32 babies that year
Average age
18
years old
2024 SSA rank
#5,375
Tracked since 1956
Census
Onix in the 2020 Census
The 2020 Census recorded 626 people with the first name Onix, which placed it at #17,560 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#17,560
National first-name rank
People counted
626
626 in the published race/origin table
Per 100,000
0.2
People with this name in 2020
Largest reported group
Hispanic or Latino
88.5% of people with this name
Demographics
Ancestry and ethnicity for Onix
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Onix is Hispanic at 88.5%. The next largest groups are White (6.4%) and Black (2.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Onix described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Onix at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino88.5% · 554
- White6.4% · 40
- Black or African American2.9% · 18
- Two or more races1.1% · 7
- Asian and Pacific Islander0.8% · 5
- American Indian and Alaska Native0.3% · 2
Gender
Gender distribution for Onix
Onix leans heavily male at 98.3% of total registrations, but 6 girls have also been registered with the name over the years, giving it a small but present crossover presence.
Onix as a male name
- Ranked #5,375 in 2024
- 18 male births in 2024
- Peak: 2023 (29 births)
Onix as a female name
- Ranked #14,852 in 2022
- 6 female births in 2022
- Peak: 2022 (6 births)
2020 Census snapshot
The 2020 Census sex table shows Onix on both sides of the split. Of the 629 people counted with this name, 500 were male (79.5%) and 129 were female (20.5%).
Popularity
Onix: popularity over time
The SSA tracks Onix from the 1950s through to the 2020s, spanning 8 decades of birth certificate data. The biggest single decade for the name was the 2020s, with 117 total registrations. The name continues to be given at rates close to its all-time high, suggesting it has not yet fallen out of fashion.
Babies born per year
Decades
Onix by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Onix during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Onix' live
Origin
Meaning and history of Onix
The name Onix is a unique and intriguing moniker that has captivated linguists and historians for centuries. Its origins can be traced back to the ancient Greek language, where it was derived from the word "onyx," a semi-precious gemstone with a distinctive black and white banded appearance.
In Greek mythology, the onyx was closely associated with the concept of endurance and resilience, traits that were highly valued by the ancient Greeks. This association may have influenced the naming of individuals with the name Onix, as it was believed to imbue them with strength and perseverance.
The earliest recorded instance of the name Onix can be found in the writings of the Greek historian Herodotus, who lived in the 5th century BCE. He mentioned a soldier named Onix who fought valiantly in the Greco-Persian Wars, earning a reputation for his bravery and unwavering spirit.
As the centuries passed, the name Onix continued to be used sporadically across various cultures and regions. One notable figure was Onix the Philosopher, a 3rd-century Roman scholar whose teachings on ethics and morality greatly influenced the intellectual landscape of his time.
During the Middle Ages, the name Onix resurfaced in certain religious texts, particularly those associated with the Eastern Orthodox Church. Saint Onix of Kyiv, a 12th-century monk renowned for his piety and devotion, was one of the most prominent individuals to bear this name during this period.
In the Renaissance era, the name Onix gained popularity among artists and intellectuals. Onix Botticelli, an Italian painter and contemporary of the renowned Sandro Botticelli, was celebrated for his vibrant and innovative frescoes adorning various churches in Florence.
As the world entered the modern era, the name Onix continued to be used, albeit less frequently. One notable figure was Onix Curie, a French chemist born in 1867, who made significant contributions to the field of radioactivity alongside her more famous husband, Pierre Curie.
Throughout its long and storied history, the name Onix has been borne by individuals from diverse backgrounds and cultures, each leaving their unique mark on the world. From ancient warriors to modern scientists, the name Onix has become a symbol of strength, resilience, and enduring spirit.
People
Onix + last name combinations
How many people share a full name with Onix as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with O
Other first names starting with O with a similar number of bearers.
FAQ
Onix: questions and answers
How many people in the U.S. are named Onix?
Name Census puts the figure at roughly 345 living Americans. We arrive at this by taking every SSA birth registration for Onix going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 993,491 US residents.
Is Onix a common name?
We classify Onix as "Very Rare". It ranks above 80.7% of all first names in the SSA dataset by living bearers. Across the full history of the data, 354 babies have been registered with this name.
When was Onix most popular?
The single biggest year for Onix was 2022, when 32 babies received the name. The fact that the average living Onix is about 18 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Onix in the 2020 Census?
The published 2020 Census first-name tables recorded 626 people with the name Onix, or 0.21 per 100,000 residents. That placed it at #17,560 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Onix in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Onix?
The 2020 Census sex table shows Onix on both sides of the split. Of the 629 people counted with this name, 500 were male (79.5%) and 129 were female (20.5%). The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Onix?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Onix is Hispanic at 88.5%. The next largest groups are White (6.4%) and Black (2.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Onix most often in the Census?
Hispanic is the largest reported group for people named Onix in the 2020 Census, accounting for 88.5% (554 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Onix in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Onix a male name?
Yes, 98.3% of people registered as Onix in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Onix still being used today?
Yes. The SSA still recorded Onix in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Onix can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
How many people have the name Onix?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.