Origin of the Lonergan Surname
The Lonergan surname is of European origin (European). In the 2010 U.S. Census it ranked #8,817 with 3,713 Americans (1.26 per 100K people).
What the name meant to the first families who bore it — and how Lonergan traveled across regions and centuries — is written out in the full Heritage Report.
Quick Facts
| Surname | Lonergan |
|---|---|
| Meaning | Full etymology in the Heritage Report |
| Origin | European |
| Language | European |
| US Rank (2010) | #8,817 |
| US Count (2010) | 3,713 |
| Per 100K People | 1.26 |
| First Letter | L |
Ethnic Distribution of Lonergan
Among 3,713 Americans named Lonergan, the largest self-reported group is White (94.83%).
The full multi-group chart (every percentage, print-ready) is inside the Heritage Report — not repeated here.
Popularity of Lonergan Over Time
Between the 2000 and 2010 U.S. Census, the national rank of Lonergan moved down. Exact counts for both years — print-ready — are in the Heritage Report.
Where did the Lonergan family really come from?
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The Complete Story of the Lonergan Family
What you’ve read above is just the overview. Your full Lonergan Heritage Report goes far deeper — and it’s yours to keep, print & share with your family.
- ✓ The true origin & meaning of Lonergan
- ✓ The Lonergan coat of arms & heraldry
- ✓ Migration journey across the world
- ✓ Where Lonergan families live today
- ✓ Notable Lonergan 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 Lonergan fact most families never hear by email — a teaser, not the full etymology (that’s in the report).
Similar Surnames to Lonergan
These surnames share similar popularity, spelling, or cultural background with Lonergan.
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 Lonergan.
Frequently Asked Questions About Lonergan
Top Surnames Starting with L
The most common American surnames that begin with the letter L, ranked by population.
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