How Many People Are Named Onyx?
people named Onyx are alive in the United States today (estimate)
About 1 in 39,881 people in the US has this name
Based on 8,632 babies named Onyx in Social Security records from 1918 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
1,271 births
Trend
Rising (last 10 years)
⚧ Gender Distribution
Of the babies given the name Onyx, 20.6% were girls and 79.4% were boys. The share of girls among babies named Onyx fell from 56.6% in the 1990s to 16.5% in the 2020s.
👥 Age Distribution
The average person named Onyx alive today is about 5 years old, and 99% are under 30. Half of them were between 1 and 7 in 2025.
📈 Popularity Over Time
Onyx first appears in the records in 1918 and was given most often in 2023, to 1,271 babies. In 2025, 1,036 babies got the name. Over the last ten years, the number each year has been rising.
Babies given the name each year, 1918 to 2025
🏆 Rank History
Onyx has never been one of the 100 most popular boys' names. Its best rank was #307, in 2023. In 2025 it ranked #365. Among girls, its best rank was #1,228, in 2023.
| Boys | Girls | |
|---|---|---|
| Rank in 2025 | #365 | #1,410 |
| Best rank | #307 (2023) | #1,228 (2023) |
| Years in the top 100 | None | None |
| Rank in its biggest decade | #383 in the 2020s | #1,357 in the 2020s |
📍 State-Wise Distribution
People named Onyx alive today, by the state where they were born (estimate; state records start in 1910).
More people named Onyx were born in California than in any other state: about 739 of those alive today. Compared with the national rate in the same years, Onyx was given 1.9 times as often in Nevada, 1.6 times in Georgia and 1.6 times in Ohio.
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