The Lacasse surname
In the 2010 U.S. Census, 3,307 people carried this name — #9,790 among all U.S. surnames, about 1 in every 89,300 people counted. That is up 6% from 3,121 in 2000.
In France’s civil register
France’s register of deaths holds 114 people named Lacasse.
2 of them were born outside France. Those born in France came from 22 départements, most often Nord.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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 97 people named Lacasse 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 Luxembourg Province.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
Nearby in the index
Surnames next to Lacasse.
- Labry 212 · U.S. census
- Lac 696 · U.S. census
- Lacaille 169 · U.S. census
- Lacambra 205 · U.S. census
- Lacarte 126 · U.S. census
- Lacas 133 · U.S. census
- Lacaze 1,123 · U.S. census
- Lacelle 286 · U.S. census
- Lach 2,515 · U.S. census
- Lachapelle 2,808 · U.S. census
- Lachat 321 · U.S. census
- Lacher 1,744 · U.S. census
When the index is not enough
This page says where Lacasse 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.