Origin of the Oleary Surname
The Oleary surname is of European origin (European). In the 2010 U.S. Census it ranked #1,607 with 22,329 Americans (7.57 per 100K people).
What the name meant to the first families who bore it — and how Oleary traveled across regions and centuries — is written out in the full Heritage Report.
Quick Facts
| Surname | Oleary |
|---|---|
| Meaning | Full etymology in the Heritage Report |
| Origin | European |
| Language | European |
| US Rank (2010) | #1,607 |
| US Count (2010) | 22,329 |
| Per 100K People | 7.57 |
| First Letter | O |
Ethnic Distribution of Oleary
Among 22,329 Americans named Oleary, the largest self-reported group is White (93.69%).
The full multi-group chart (every percentage, print-ready) is inside the Heritage Report — not repeated here.
Popularity of Oleary Over Time
Between the 2000 and 2010 U.S. Census, the national rank of Oleary moved down. Exact counts for both years — print-ready — are in the Heritage Report.
Where did the Oleary family really come from?
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The Complete Story of the Oleary Family
What you’ve read above is just the overview. Your full Oleary Heritage Report goes far deeper — and it’s yours to keep, print & share with your family.
- ✓ The true origin & meaning of Oleary
- ✓ The Oleary coat of arms & heraldry
- ✓ Migration journey across the world
- ✓ Where Oleary families live today
- ✓ Notable Oleary bearers in history
- ✓ Name variations & spellings worldwide
- ✓ A step-by-step guide to start tracing your own family tree
🎁 A heritage keepsake to pass down — perfect as a gift.
Get one Oleary fact most families never hear by email — a teaser, not the full etymology (that’s in the report).
Similar Surnames to Oleary
These surnames share similar popularity, spelling, or cultural background with Oleary.
Other European Surnames
Explore more surnames with European roots. There are 162,254 surnames in our database — here are some that share the same European origin as Oleary.
Frequently Asked Questions About Oleary
Top Surnames Starting with O
The most common American surnames that begin with the letter O, ranked by population.
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