Lacour

surname · Latin script

Recorded for both men and women· direction only, no split published

Lacour is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: topographic or occupational name for someone who lived at or was employed at a manorial court (see Court).

rarermore common
  • USUnited States1 in 87K(measured from records)
  • BEBelgium1 in 54K
  • CHSwitzerland1 in 122K

carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

3,822 people, 2010

Sources
297 (measured from records)

Highest-authority source

1 in 54K (inferred from the name graph)

Belgium

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

topographic or occupational name for someone who lived at or was employed at a manorial court (see Court).

Sources 1

  • Dictionary of American Family Names

Where in the world(measured from records)

Lacour counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.

Where Lacour is recorded, by country
CountryMost common spellingSources
US United States3,8221 in 87K3.8KLacour297
AR Argentina2401 in 189K240——
BE Belgium2161 in 54K216Lacour12
CH Switzerland691 in 122K69Lacour8
BR Brazil511 in 4.2M51—1
NL Netherlands211 in 823K21Lacour8

3,822 people counted by Census Bureau — Surname Frequency 2010, 2010. Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.

Registers cited: Census Bureau — Surname Frequency 2010; RENAPER — Apellidos (person counts, national); Familienaam.be — Belgian family-name frequency (population register); BFS — Familiennamen der Wohnbevölkerung (surnames); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007). Figures without a register are Mondonomo estimates; see Methodology.

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).

Other names spelled this way(inferred from the name graph)

Lacour is also recorded as 2 other names, grouped separately because the records behind them do not connect to the one described above.

  • Arabic surname2 spellings in the group

    Most recorded in Egypt, United States, Algeria

    Also written Lăcoür

  • Russian surname10 spellings in the group

    Most recorded in Russia, Ukraine, United States

    Languages: Russian, Ukrainian

    Also written Лакур, Lakur, Lacourt

46 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Notable people with this name(measured from records)

1700180019002000Pierre Lacour, b. 1745Pierre Lacour, b. 1778Louis Lacour, b. 1832Léopold Lacour, b. 1854Georges Lacour-Gayet, b. 1856Robert Lacour-Gayet, b. 1896José-André Lacour, b. 1919Guy Lacour, b. 1932Fred LaCour, b. 1938Guillaume Lacour, b. 1980

The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).

Evidence(measured from records)

Attested in 22 sources across 11 countries.

Official registers attesting Lacour
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 201020103.8K#8,608
US United StatesCensus Bureau — Surname Frequency 202020203.7K#8,566
US United StatesCensus Bureau — Surname Frequency 200020003.6K#8,465
AR ArgentinaRENAPER — Apellidos (person counts, national)—240—
BE BelgiumFamilienaam.be — Belgian family-name frequency (population register)2008216#7,828
BE BelgiumStatbel — Noms de famille (family names)—210#8,565
CH SwitzerlandBFS — Familiennamen der Wohnbevölkerung (surnames)202469#14,666
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—51#103,379
NL NetherlandsCBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007)200721#48,422
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 5

  • Dictionary of American Family Names
  • The Oxford Dictionary of Family Names in Britain and Ireland
  • Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
  • Wikidata name items (native-script + romanized given/family names)
  • jeantosti.com — Dictionnaire des noms de famille de France et d'ailleurs (Jean Tosti)

These works list the name; their figures are licensed and are not reproduced here.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

What does the name Lacour mean, and where does it come from?
topographic or occupational name for someone who lived at or was employed at a manorial court (see Court). Recorded by Dictionary of American Family Names.
In which country does Lacour have the most bearers?
In the United States, the national register counted about 3.8 thousand people named Lacour, more than in any other country we hold, where it is most often spelled lacour.
Where is Lacour most common?
Measured as a share of residents rather than as a count, Lacour is densest in Belgium — about 1 in 54 thousand people — even though United States holds more of our records for it.
How common is the name Lacour?
In the United States, the national register counted 3,822 people named Lacour in 2010, about 1 in 87 thousand residents.

What do you want to know about Lacour?

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Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/lacour

The same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use; a free API key gives 1,000 requests a day, and bulk access is licensed separately.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of and will change as it is rebuilt.

Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.

Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.

Cite this page Mondonomo, “Lacour”. Data snapshot 2026-10-10.

See how Lacour parses inside a full name →