The Lagrange surname
In the 2000 U.S. Census, 2,415 people carried this name — #11,869 among all U.S. surnames, about 1 in every 111,100 people counted.
In France’s civil register
France’s register of deaths holds 4,753 people named Lagrange.
53 of them were born outside France. Those born in France came from 94 départements, most often Paris.
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 161 people named Lagrange 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 West Flanders.
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.
In Switzerland’s population statistics
59 people named Lagrange live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Vaud.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss · names with fewer than 3 bearers in a canton are not published.
Nearby in the index
Surnames next to Lagrange.
- Lagneaux 149 · U.S. census
- Lago 2,341 · U.S. census
- Lagoda 147 · U.S. census
- Lagon 171 · U.S. census
- Lagorio 293 · U.S. census
- Lagrand 403 · U.S. census
- Lagrave 265 · U.S. census
- Lagree 316 · U.S. census
- Lague 803 · U.S. census
- Laguerre 2,052 · U.S. census
- Lagueux 267 · U.S. census
- Laguna 3,906 · U.S. census
When the index is not enough
This page says where Lagrange 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.