Onyx
Girl name · #1406 in 2025 · Rare
How old is the name Onyx? In official American birth records, Onyx has been tracked continuously since 1918, giving it 107 years of documented American history.
Onyx ranks #1406 among American girls' names as of 2025, with 155 newborns given the name that year. A decade ago it stood at #3915, so the name has been rising over the past ten years. Roughly one in every 11,613 girls born in 2025 was named Onyx.
The 107-year story
Onyx first appears in the Social Security records in 1918, when 5 girls received the name. Its all-time peak is essentially right now: 2023, with 192 babies and a rank of #1226. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Onyx per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Onyx against up to 5 other names.
Uniqueness: will there be another Onyx in class?
On our rarity read — which blends how common Onyx is today with its five-year momentum — the name reads as "rare". A high score means genuine rarity — your Onyx will likely be the only one in the room, with the occasional spelling-out as the price.
Where Onyx is most common
Geography matters for names, and Onyx is no exception. Adjusted for how many girls are born in each state, Onyx is most common in GA (0.3 per 1,000), FL (0.1 per 1,000), CA (0.1 per 1,000), TX (0.1 per 1,000) — against a national average of about 0.1 per 1,000 girls. These are per-capita rates, so they show where Onyx is a genuine regional favorite rather than just where the most babies are born.
Names like Onyx
Statistically, parents drawn to Onyx tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Nyx, Gaia, True, Nami, and Navi.
NyxGaiaTrueNamiNaviLeniMaevaAlya
Rank history (last 25 years)
| Year | Babies named Onyx | Rank |
|---|---|---|
| 2025 | 155 | #1406 |
| 2024 | 187 | #1242 |
| 2023 | 192 | #1226 |
| 2022 | 173 | #1350 |
| 2021 | 174 | #1301 |
| 2020 | 115 | #1743 |
| 2019 | 95 | #2011 |
| 2018 | 77 | #2361 |
| 2017 | 70 | #2530 |
| 2016 | 58 | #2902 |
| 2015 | 38 | #3915 |
| 2014 | 45 | #3486 |
| 2013 | 33 | #4336 |
| 2012 | 31 | #4601 |
| 2011 | 18 | #6855 |
| 2010 | 22 | #5977 |
| 2009 | 24 | #5709 |
| 2008 | 11 | #10084 |
| 2007 | 25 | #5526 |
| 2006 | 19 | #6592 |
| 2005 | 12 | #8883 |
| 2004 | 10 | #9892 |
| 2003 | 12 | #8505 |
| 2002 | 15 | #7045 |
| 2001 | 18 | #6067 |
Frequently asked questions
How old is the name Onyx?
In official American birth records, the name Onyx first appeared in 1918 (over 107 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 107 years.
Is Onyx a popular girl name?
Onyx ranked #1406 among girls in 2025 with 155 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #3915.
When was the name Onyx most popular?
Onyx peaked in 2023, when 192 American girls received the name (ranked #1226 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Onyx?
In 2025, roughly 1 in 11,613 newborn American girls was named Onyx. On our rarity scale (rarity blended with momentum) we classify it as "rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.