Onslow
- US rank
- Unranked
- Syllables
- 2
- Peak
- #3,217 in 1917
0 babies were named Onslow in the US in 2025.
Found on lists
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US births per million boys, 1917–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Onslow you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryOnslow first shows up in US birth records in 1917, the first year at least 5 babies got it. It has been in use for 108 years since.
- Best yearIts best year was 1917, when it reached #3,217.
About the name Onslow
Onslow is a boy name of Arabic and English origin. It has 6 letters and 2 syllables, starting with O and ending in “-low”. US birth records list Onslow for boys only in 1917, the one year at least 5 babies got it. Its best year was 1917, when it ranked #3,217 among boy names. It hasn't been given to 5 or more US babies in a year since 1917, so today it's a genuinely rare choice.
Origin:Arabic namesEnglish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1910s | 7.6 | 131,579 boys |
More Arabic boy names
- Boy name: Caleb · dog, faithful
- Boy name: Silas · of the forest
- Boy name: Aaron · possibly exalted
- Boy name: Xavier · new house
- Boy name: Jasper · treasurer
- Boy name: Malcolm · devotee of Saint Columba
- Unisex name: Cairo · the victorious
- Boy name: Ibrahim · father of many
Questions about the name Onslow
What is the origin of the name Onslow?
Onslow has Arabic, English roots in our records. Other Arabic names include Caleb, Silas, Aaron.
Is Onslow a boy or girl name?
Onslow is a boy name.
How popular is the name Onslow?
Onslow is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 1917. It peaked at #3,217 in 1917.