The Lacour surname
In the 2010 U.S. Census, 3,822 people carried this name — #8,608 among all U.S. surnames, about 1 in every 76,900 people counted. That is up 7% from 3,585 in 2000.
In France’s civil register
France’s register of deaths holds 5,349 people named Lacour.
47 of them were born outside France. Those born in France came from 97 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 Argentina’s national register
At least 240 people named Lacour 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 mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Belgium’s population register
At least 97 people named Lacour 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 Hainaut.
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.
In Switzerland’s population statistics
73 people named Lacour live in Switzerland.
They live in 4 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/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In print
Lacour in American newspapers,
1857.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 14,833 pages in all carry the name.
Who carried it
People named Lacour,
with a public archive behind them.
-
Pierre Lacour the Elder 1745–1814 · curator -
Pierre Lacour 1778–1859 · painter -
Léopold Lacour 1854–1939 · writer -
Georges Lacour-Gayet 1856–1935 · historian -
Marie Léopold-Lacour 1859–1942 · writer -
Jacques Nicolas Lacour 1760–1839 · military personnel
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Lacour.
- Lacombe 4,524 · U.S. census
- Lacome 125 · U.S. census
- Lacore 203 · U.S. census
- Lacorte 954 · U.S. census
- Lacosse 479 · U.S. census
- Lacoste 2,430 · U.S. census
- Lacourt 365 · U.S. census
- Lacouture 479 · U.S. census
- Lacquement 189 · U.S. census
- Lacroix 8,003 · U.S. census
- Lacrosse 1,090 · U.S. census
- Lada 963 · U.S. census
When the index is not enough
This page says where Lacour 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.