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

The Lavanchy surname

In the 2010 U.S. Census, 100 people carried this name — #160,975 among all U.S. surnames, about 1 in every 3,333,300 people counted. That is down 4% from 104 in 2000.

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In Switzerland’s population statistics

711 people named Lavanchy live in Switzerland.

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

Where it concentrates, on the map

Where they live today

Vaud 408
Geneva 82
Valais 49
Bern 46
Neuchâtel 44
Fribourg 30
Zurich 20
Aargau 12

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 Argentina’s national register

At least 230 people named Lavanchy 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 86
Santa Fe 57
Chaco 48
City of Buenos Aires 16
Entre Ríos 13
Córdoba 10

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

In France’s civil register

France’s register of deaths holds 163 people named Lavanchy.

20 of them were born outside France. Those born in France came from 20 départements, most often Haute-Savoie.

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

Where they were born

Born outside France 20
Haute-Savoie 83
Paris 12
Manche 6
Essonne 5
Yonne 5
Isère 4
Yvelines 4
Savoie 3

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

Who carried it

People named Lavanchy,
with a public archive behind them.

  • Henri Lavanchy 1836–1914 · architect
  • Gustave Lavanchy 1877–1948
  • Ami Lavanchy 1882–1965
  • Pierre Lavanchy 1911–1964
  • Henri-Ferdinand Lavanchy 1926–2012 · entrepreneur
  • Sergio Lavanchy 1943– · engineer

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

Nearby in the index

Surnames next to Lavanchy.

When the index is not enough

This page says where Lavanchy 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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