Onyx Boy
How popular is Onyx?
#365 boy name in 2025
881 baby boys were named Onyx in the US in 2025, making it the 365th most popular boy name. Another 155 girls got the name (#1,406 for girls).
Onyx popularity over time
Boys Girls
| Rank in 2025 | #365 for boys (▼ 7 from 2024) |
|---|---|
| Babies in 2025 | 881 boys, 155 girls |
| 10-year trend | Rising fast (+628% babies vs 2015) |
| Earlier ranks | #1,416 in 2015, #612 in 2020 |
| Peak year | 2023 (1,079 boys) |
| Highest rank | #307 in 2023 |
| First recorded | 1990 |
| Boys vs girls (last 10 years) | 82% boys, 18% girls |
| Chance a classmate shares it | 0.7% in a class of 25 kids born in 2025 |
Onyx counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Onyx family of names ranked #366 for boys in 2025 (#348 the year before), with 903 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Onyx | 881 | 98% |
| Onix | 22 | 2% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Onyx is most popular
Babies named Onyx per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Nevada: 1.2 per 1,000 (71 boys)
- Hawaii: 1.1 per 1,000 (17 boys)
- North Dakota: 1.1 per 1,000 (18 boys)
- Oklahoma: 0.9 per 1,000 (84 boys)
- Ohio: 0.9 per 1,000 (251 boys)
Onyx by decade
Boy names about as popular as Onyx
Questions
- Is Onyx a boy or girl name?
- Onyx is mostly a boy name. Over the last 10 years, 82% of babies named Onyx were boys.
- How popular is the name Onyx?
- 881 baby boys were named Onyx in the US in 2025, making it the 365th most popular boy name. Another 155 girls got the name (#1,406 for girls).
- When was Onyx most popular?
- Onyx peaked in 2023, when 1,079 boys were given the name. Its highest rank was #307 in 2023.
- How many people are named Onyx?
- 8,632 babies have been named Onyx in the US since 1880. We estimate about 8,590 of them are alive in 2026, with a median age of 4.
- Where is Onyx most popular?
- From 2021 to 2025, Onyx was most common in Nevada, at 1.2 of every 1,000 boys born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.