Grandjean surname: U.S. census count, rank and records | FamilyCrests

The Grandjean surname

In the 2010 U.S. Census, 399 people carried this name — #52,037 among all U.S. surnames, about 1 in every 714,300 people counted. That is down 1% from 404 in 2000.

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In France’s civil register

France’s register of deaths holds 5,786 people named Grandjean.

113 of them were born outside France. Those born in France came from 91 départements, most often Haute-Saône.

Where it concentrates, on the map

Where they were born

Born outside France 113
Haute-Saône 710
Paris 543
Meurthe-et-Moselle 386
Vosges 383
Saône-et-Loire 314
Doubs 222
Moselle 215
Rhône 213

Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.

In Switzerland’s population statistics

1,707 people named Grandjean live in Switzerland.

They live in 12 of Switzerland’s 26 cantons, most of all in Fribourg.

Where it concentrates, on the map

Where they live today

Fribourg 574
Vaud 488
Geneva 223
Neuchâtel 147
Bern 121
Valais 65
Zurich 50
Jura 13

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.

In Belgium’s population register

At least 1,108 people named Grandjean 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.

Where it concentrates, on the map

Where they live today

Luxembourg Province 318
Liège 295
Namur 233
Flemish Brabant 86
Brussels-Capital 75
Walloon Brabant 46
Hainaut 36
Antwerp 14

Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.

In Argentina’s national register

At least 176 people named Grandjean live in Argentina.

RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.

Where it concentrates, on the map

Where they live today

Buenos Aires Province 110
Córdoba 28
Corrientes 17
City of Buenos Aires 11
Tucumán 10

RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.

Nearby in the index

Surnames next to Grandjean.

When the index is not enough

This page says where Grandjean 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.

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