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

The Lachat surname

In the 2010 U.S. Census, 321 people carried this name — #62,359 among all U.S. surnames, about 1 in every 909,100 people counted. That is up 2% from 315 in 2000.

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In Switzerland’s population statistics

1,010 people named Lachat live in Switzerland.

They live in 16 of Switzerland’s 26 cantons, most of all in Jura.

Where it concentrates, on the map

Where they live today

Jura 399
Vaud 132
Bern 128
Geneva 95
Neuchâtel 49
Fribourg 49
Valais 37
Basel-Landschaft 32

Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.

In France’s civil register

France’s register of deaths holds 546 people named Lachat.

36 of them were born outside France. Those born in France came from 39 départements, most often Loire.

Where it concentrates, on the map

Where they were born

Born outside France 36
Loire 119
Doubs 80
Haute-Savoie 67
Rhône 42
Paris 28
Loir-et-Cher 24
Territoire de Belfort 18
Haute-Saône 14

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 98 people named Lachat 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.

Too few records to say where it concentrates region by region — these are plain counts, not shares.

Where they live today

West Flanders 51
Hainaut 36
East Flanders 6
Antwerp 5

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

In Argentina’s national register

At least 93 people named Lachat 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.

Too few records to say where it concentrates region by region — these are plain counts, not shares.

Where they live today

Buenos Aires Province 48
Córdoba 45

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

Who carried it

People named Lachat,
with a public archive behind them.

  • Eugène Lachat
    Eugène Lachat 1819–1886 · Catholic priest
  • Georges Lachat
    Georges Lachat 1910–1992 · sport cyclist
  • Jean-François Lachat 1807–1875
  • Jean-Louis Lachat 1846–1877 · actor
  • Paul Lachat 1910–1984 · historian
  • Nicole Lachat-Martin 1919–2010 · artist

Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.

Nearby in the index

Surnames next to Lachat.

When the index is not enough

This page says where Lachat 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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