Casadío
surname · Latin script
Casadío is a surname written in the Latin script, with more bearers in Italy than in any other country. Recorded meaning: Variante di Casadei.
- ITItaly≈1 in 35K(inferred from the name graph)
- CHSwitzerland1 in 255K
- ARArgentina1 in 406K
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.
- Italy (inferred from the name graph)
- Sources
- 89 (measured from records)
- ≈1 in 35K (inferred from the name graph)
≈1,800 people, est.
Highest-authority source
Italy, est.
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Casadio in IT Italy, AR Argentina, BR Brazil 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(measured from records)
Variante di Casadei
Sources 2
- Dizionario dei cognomi italiani
- Dicionário dos sobrenomes italianos
Where in the world(measured from records)
Casadío 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 | |||
|---|---|---|---|---|---|
| IT Italy | ≈1,800 est. | ≈1 in 35K | listed | Casadio | 89 |
| BR Brazil | 266 | 1 in 796K | 266 | Casadio | 43 |
| AR Argentina | 112 | 1 in 406K | 112 | Casadio | 30 |
| FR France | ≈61 est. | ≈1 in 1.1M | 9 | — | 1 |
| US United States | ≈37 est. | ≈1 in 9.1M | listed | Casadio | 36 |
| CH Switzerland | 33 | 1 in 255K | 33 | Casadio | 3 |
| CZ Czechia | 13 | 1 in 823K | 13 | — | — |
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: RENAPER — Apellidos (person counts, national); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); BFS — Familiennamen der Wohnbevölkerung (surnames); MVČR — living population register 2017; INSEE — Fichier des noms de famille (1891–2000). 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).
Evidence(measured from records)
No register attests this spelling yet
Frequently asked questions
- What does the name Casadío mean, and where does it come from?
- Variante di Casadei Recorded by Dizionario dei cognomi italiani and Dicionário dos sobrenomes italianos.
- In which country does Casadío have the most bearers?
- Mondonomo estimates about 1.8 thousand people named Casadío in Italy, more than in any other country we hold, where it is most often spelled casadio.
- How common is the name Casadío?
- In Brazil, the national register counted 266 people named Casadío, about 1 in 796 thousand residents.
What do you want to know about Casadío?
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/casad%C3%ADoThe 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, “Casadío”. Data snapshot 2026-10-10.