Défosse
surname · Latin script
Défosse is a surname written in the Latin script, with more bearers in France than in any other country.
- FRFrance≈1 in 35K(inferred from the name graph)
- BEBelgium1 in 29K
- GBUnited Kingdom≈1 in 450K
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.
- France (inferred from the name graph)
- Sources
- 191 (measured from records)
- 1 in 29K (inferred from the name graph)
≈2,000 people, est.
Highest-authority source
Belgium
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Defosse in FR France, BE Belgium, US United States and 2 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 5 languages in the etymology graph.
Where in the world(measured from records)
Défosse 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.
| Country | Most common spelling | Sources | |||
|---|---|---|---|---|---|
| FR France | ≈2,000 est. | ≈1 in 35K | 307 | Defosse | 191 |
| BE Belgium | 401 | 1 in 29K | 401 | Defosse | 46 |
| US United States | 289 | 1 in 1.2M | 289 | Defosse | 57 |
| GB United Kingdom | ≈150 est. | ≈1 in 450K | — | Defosse | 6 |
| CA Canada | ≈75 est. | ≈1 in 504K | — | Defosse | 14 |
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: INSEE — Fichier des noms de famille (1891–2000); Familienaam.be — Belgian family-name frequency (population register); Census Bureau — Surname Frequency 2010. 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).
Evidence(measured from records)
No register attests this spelling yet
Frequently asked questions
- In which country does Défosse have the most bearers?
- Mondonomo estimates about 2.0 thousand people named Défosse in France, more than in any other country we hold, where it is most often spelled defosse.
- Where is Défosse most common?
- Measured as a share of residents rather than as a count, Défosse is densest in Belgium — about 1 in 29 thousand people — even though France holds more of our records for it.
- How common is the name Défosse?
- In Belgium, the national register counted 401 people named Défosse in 2008, about 1 in 29 thousand residents.
What do you want to know about Défosse?
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/d%C3%A9fosseThe 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 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, “Défosse”. Data snapshot 2026-10-10.