Girl & boy name
Onyx
As of 2025, Onyx ranks #365 among American boys' names, according to Social Security records. 881 boys received the name that year. It has climbed from #612 to #365 over the past five years. SSA records for Onyx go back to 1990; the peak came in 2023 at #307, with 1,079 babies named that year. Geographically, it's strongest in Nevada, where it ranks #187 among boy names.
Rankings
Onyx popularity, 1880–2025
Where Onyx is most popular
Uniqueness score
A familiar pick that most people will recognize instantly. Based on how many babies per birth were named Onyx in the most recent year of SSA data.
Onyx as a girl name
Onyx is currently the #1406 girl name in the United States, based on 2025 Social Security data. In raw numbers: 155 babies. Momentum is clearly positive: five years ago it ranked #1743, now it sits at #1406. Looking at the full record since 1918, Onyx hit its all-time high of #1226 in 2023, when 192 girls were given the name. State by state, Nevada leads the way at #433.
Where Onyx (girls) is most popular
Uniqueness score
Well known, but far from crowded — the middle of the field. Based on how many babies per birth were named Onyx in the most recent year of SSA data.