Dalessio
surname · Latin script
Meaning: grafia justaposta de D'Alessio
Recorded for both men and women· direction only, no split published
/dəˈɫɛsioʊ/(machine-generated) pronunciation, model-generated
Dalessio is a surname written in the Latin script, with more bearers in Italy than in any other country. In Bermuda it is the 60th most common surname.
- ITItaly≈1 in 14K(inferred from the name graph)
- USUnited States1 in 123K
- GBUnited Kingdom≈1 in 147K
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
- 247 (measured from records)
- ≈1 in 11K (inferred from the name graph)
≈4,500 people, est.
Highest-authority source
Bermuda, 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 D'Alessio in IT Italy, CH Switzerland.
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)
grafia justaposta de D'Alessio
Sources 1
- Dicionário dos sobrenomes italianos
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Dalessio 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 | #734 | ≈4,500 est. | ≈1 in 14K | listed | D'Alessio | 95 |
| US United States | — | 2,706 | 1 in 123K | 2.7K | Dalessio | 247 |
| GB United Kingdom | — | ≈450 est. | ≈1 in 147K | 101 | Dalessio | 34 |
| CA Canada | — | ≈250 est. | ≈1 in 152K | — | Dalessio | 39 |
| IN India | — | ≈210 est. | ≈1 in 6.3M | — | Dalessio | 2 |
| CH Switzerland | — | 111 | 1 in 76K | 111 | D'Alessio | 9 |
| UY Uruguay | — | 77 | 1 in 44K | 77 | — | — |
| JM Jamaica | — | ≈43 est. | ≈1 in 66K | — | Dalessio | 1 |
| BM Bermuda | #60 | ≈6 est. | ≈1 in 11K | — | Dalessio | 1 |
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; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); BFS — Familiennamen der Wohnbevölkerung (surnames); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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).
How to address them(machine-generated)
Evidence(measured from records)
Attested in 10 sources across 6 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 2.7K | #11,603 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 2.6K | #11,154 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 2.6K | #11,682 |
| UY Uruguay | INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public) | — | 77 | — |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 1
- Wikidata name items (native-script + romanized given/family names)
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 Dalessio mean, and where does it come from?
- grafia justaposta de D'Alessio Recorded by Dicionário dos sobrenomes italianos.
- How do you pronounce Dalessio?
- A machine transcription gives /dəˈɫɛsioʊ/ (IPA) for English.
- In which country does Dalessio have the most bearers?
- Mondonomo estimates about 4.5 thousand people named Dalessio in Italy, more than in any other country we hold, where it is most often spelled D'Alessio.
- How common is the name Dalessio?
- In the United States, the national register counted 2,706 people named Dalessio in 2010, about 1 in 123 thousand residents.
- How common is Dalessio compared with other names?
- In Italy, Dalessio is the 734th most common surname of 502,013 surnames recorded there.
What do you want to know about Dalessio?
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/dalessioThe 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, “Dalessio” — the 734th most common surname in Italy. Data snapshot 2026-10-10.