Làcost

Name: Làcost: recorded bearers, distribution and rank
Creator: Mondonomo
Published: 2026-10-10

surname · Latin script

Làcost is a surname written in the Latin script, with more bearers in the United States than in any other country.

rarermore common

USUnited States1 in 1.6M(measured from records)
DZAlgeria≈1 in 3.2M
MAMorocco≈1 in 9.9M

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

: United States (measured from records)
Sources: 5 (measured from records)
: 1 in 1.6M (inferred from the name graph)

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

One other spelling is counted as the same name:

Lacost

Locally spelled Lacost in DZ Algeria, US United States, MA Morocco and 1 more.

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Attested across 12 languages in the etymology graph.

Where in the world(measured from records)

Làcost 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 Làcost is recorded, by country
Country					Most common spelling	Sources
US United States	—	209	1 in 1.6M	221	Lacost	4
DZ Algeria	#387	≈13 est.	≈1 in 3.2M	—	Lacost	5
MA Morocco	—	≈4 est.	≈1 in 9.9M	—	Lacost	4
EG Egypt	—	—	—	—	Lacost	4

209 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; Census Bureau — Surname Frequency 2000. 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)

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

Spanish surname5 spellings in the group
Most recorded in United States, Argentina, Mexico, Brazil
Languages: Spanish, Portuguese
Also written Lacost, Laĉôst, Lacõst
English surname18 spellings in the group
Most recorded in United States, France, Algeria, United Kingdom
Languages: English, French, German
Also written Lacost, Laçost, Lácòst, Lãcösť, Làçôst

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.

Evidence(measured from records)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Làcost under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Frequently asked questions

In which country does Làcost have the most bearers?: In the United States, the national register counted about 209 people named Làcost, more than in any other country we hold, where it is most often spelled lacost.
Where is Làcost most common?: Làcost is densest in the United States, where the national register counts about 1 in 1.6 million people carrying it.
How common is the name Làcost?: In the United States, the national register counted 209 people named Làcost in 2010, about 1 in 1.6 million residents.
How common is Làcost compared with other names?: In Algeria, Làcost is the 387th most common surname of 89,473 surnames recorded there.

What do you want to know about Làcost?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

Query this name via API

curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/l%C3%A0cost

The payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of 2026-10-10 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, “Làcost” — the 387th most common surname in Algeria. Data snapshot 2026-10-10.

See how Làcost parses inside a full name →

Spellings & scripts●(measured from records)