Onyx
Onyx is given to both girls and boys: 155 girls and 881 boys were given it in 2025 (#1,410 among girls’ names and #365 among boys’, #638 among all names counting both); 8,632 Americans have been recorded with it since 1918 (Social Security Administration, published May 2026).
An estimated 8,560 Americans named Onyx and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 4 years old and half are between 2 and 8.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Onyx by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Onyx?
#365 among boys’ names, 2025
Onyx rose from #1,426 in 2015 to #365 in 2025 among boys’ names; its share of boys born rose from 0.06 to 0.52 per 1,000.
1,271 babies in 2023, the peak
Onyx peaked in 2023, when 1,271 babies were given it (1,079 boys, #307 among boys’ names). The 1,036 births of 2025 (girls and boys) are 82% of that peak.
Births by sex.
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2025 | 155 | #1,410 | 881 | #365 |
| 2024 | 187 | #1,248 | 931 | #358 |
| 2023 | 192 | #1,228 | 1,079 | #307 |
| 2022 | 173 | #1,352 | 937 | #352 |
| 2021 | 174 | #1,303 | 768 | #405 |
| 2020 | 115 | #1,748 | 447 | #613 |
| 2019 | 95 | #2,028 | 323 | #744 |
| 2018 | 77 | #2,379 | 257 | #858 |
| 2017 | 70 | #2,536 | 188 | #1,060 |
| 2016 | 58 | #2,929 | 175 | #1,118 |
Every recorded year (39)
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2015 | 38 | #3,966 | 121 | #1,426 |
| 2014 | 45 | #3,526 | 92 | #1,677 |
| 2013 | 33 | #4,400 | 78 | #1,844 |
| 2012 | 31 | #4,682 | 81 | #1,828 |
| 2011 | 18 | #7,045 | 57 | #2,277 |
| 2010 | 22 | #6,126 | 59 | #2,229 |
| 2009 | 24 | #5,848 | 60 | #2,221 |
| 2008 | 11 | #10,615 | 41 | #2,924 |
| 2007 | 25 | #5,653 | 31 | #3,488 |
| 2006 | 19 | #6,772 | 29 | #3,583 |
| 2005 | 12 | #9,306 | 20 | #4,416 |
| 2004 | 10 | #10,492 | 26 | #3,605 |
| 2003 | 12 | #8,922 | 17 | #4,751 |
| 2002 | 15 | #7,343 | 20 | #4,142 |
| 2001 | 18 | #6,243 | 15 | #5,068 |
| 2000 | 12 | #8,412 | 21 | #3,873 |
| 1999 | 7 | #12,315 | 8 | #7,668 |
| 1998 | 19 | #5,522 | 12 | #5,375 |
| 1997 | 12 | #7,607 | 17 | #3,998 |
| 1996 | 14 | #6,641 | 13 | #4,803 |
| 1995 | 14 | #6,520 | 10 | #5,787 |
| 1994 | 16 | #5,906 | 9 | #6,203 |
| 1993 | 16 | #5,860 | 14 | #4,384 |
| 1992 | 11 | #7,879 | 6 | #8,168 |
| 1991 | 6 | #12,634 | under 5 | |
| 1990 | 9 | #9,008 | 6 | #7,833 |
| 1989 | 8 | #9,388 | under 5 | |
| 1985 | 5 | #11,931 | under 5 | |
| 1918 | 5 | #5,392 | under 5 |
Ranks: girls’ names and boys’ names ranked separately in each year’s SSA file; “under 5” is a year SSA did not list the name for that sex.
Is Onyx a boy’s or a girl’s name?
Of the 8,632 Americans recorded as Onyx, 21% are girls and 79% boys.
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Onyx: the SSA national file counts each sex separately.
How many people are named Onyx, and how old are they?
8,560 alive in 2026, estimated
That is 99% of the 8,632 Americans ever recorded as Onyx. The median Onyx alive today is 4 years old; half are between 2 and 8.
The 2020 Census counted 2,349 people named Onyx (710 women and girls, 1,639 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 2,708 born in the U.S. The Census count is 13% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Millennials | 1981-1996 | 153 |
| Generation Z | 1997-2012 | 771 |
| Generation Alpha | 2013-2025 | 7,640 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Onyx born?
The states with the most babies named Onyx are California, Texas and Florida, with 24% of its births recorded by state in 2025.
| State | Births 2025 | Rank, boys | vs. national |
|---|---|---|---|
| California | 81 | #469 | 0.7× |
| Texas | 76 | #510 | 0.6× |
| Florida | 67 | #353 | 1.0× |
| Ohio | 61 | #243 | 1.2× |
| Georgia | 61 | #264 | 1.2× |
| Virginia | 42 | #257 | 1.0× |
| New York | 41 | #470 | 0.7× |
| Michigan | 35 | #286 | 0.9× |
| Illinois | 34 | #415 | 0.7× |
| North Carolina | 33 | #354 | 0.8× |
Where Onyx is more common than its national share predicts
Relative to its national share, Onyx is most over-represented in Ohio: since 1918 it was given 1.2 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Onyx with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 3 names spelled alike, given to 9,156 babies since 1880, Onyx is the most given (94% of them). In 2025 it was given to 1,036 of their 1,087 babies (95%), again the most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Onyx
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Onyx and names like it
- Compare Onyx and OnixBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sOnyx peaked in 2023.
- California’s most given namesThe state where SSA recorded the most babies named Onyx since 1910.
- The top names of 2023The year the most babies were named Onyx.
- The names of Generation AlphaMost people named Onyx alive today were born 2013-2025.
- Names starting with OMost given first.