The Lelong surname
In the 2010 U.S. Census, 115 people carried this name — #144,141 among all U.S. surnames, about 1 in every 2,500,000 people counted. That is down 9% from 127 in 2000.
In France’s civil register
France’s register of deaths holds 4,798 people named Lelong.
41 of them were born outside France. Those born in France came from 85 départements, most often Pas-de-Calais.
Where it concentrates, on the mapWhere they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Belgium’s population register
At least 229 people named Lelong live in Belgium.
Statbel only publishes a name in a municipality when five or more people there share it, so the real number is higher. Most of them live in Hainaut.
Where it concentrates, on the mapWhere they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
Who carried it
People named Lelong,
with a public archive behind them.
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Pierre Lelong 1650–1690 · pirate
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Jacques Lelong 1665–1721 · librarian
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Maximilien Lelong 1765–1836 · architect
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Pierre-Arsène Lelong 1795–1889 · lawyer
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Paul Lelong 1799–1846 · architect
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Alfred Lelong 1803–1832
Wikidata (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Lelong.
- Leitz 996 · U.S. census
- Leix 146 · U.S. census
- Lejeune 5,544 · U.S. census
- Leleux 681 · U.S. census
- Lelievre 295 · U.S. census
- Lelli 341 · U.S. census
- Leloup 152 · U.S. census
- Lemahieu 182 · U.S. census
- Lemaire 2,931 · U.S. census
- Lemaitre 411 · U.S. census
- Leman 1,418 · U.S. census
- Lemann 100 · U.S. census
When the index is not enough
This page says where Lelong is.
A volume says what happened to it.
Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.