Delrio

surname · Latin script

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

/ˈdɛɫɹioʊ/(machine-generated) pronunciation, model-generated

Delrio is a surname written in the Latin script, with more bearers in Spain than in any other country.

rarermore common
  • USUnited States1 in 34K(measured from records)
  • UYUruguay1 in 1.7K
  • ESSpain1 in 1.9K

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.

Spain (measured from records)

25,733 people

Sources
220 (measured from records)

Highest-authority source

1 in 1.7K (inferred from the name graph)

Uruguay

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin

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

Sources 1

Where in the world(measured from records)

Delrio 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 Delrio is recorded, by country
CountryMost common spellingSources
ES Spain—25,7331 in 1.9K26KDelrio32
US United States—9,8141 in 34K9.8KDelrio220
AR Argentina—6,3421 in 7.2K6.3KDelrio36
UY Uruguay—1,9781 in 1.7K2K—8
IT Italy—≈1,800 est.≈1 in 36K1Delrio26
PR Puerto Rico#153≈840 est.≈1 in 3.8K—Delrio6
CL Chile—≈830 est.≈1 in 22K—Delrio18

25,733 people counted by INE — Padrón per-token widgets (current living counts, given + apellidos), counting the spelling del rio. 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; INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); RENAPER — Apellidos (person counts, national); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public); ISTAT — Contanomi newborn per-name series (1999–2024, JSONP backend). 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)

Delrio is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate name5 spellings in the group

    Also written Del-Río, Délrio, Delrío, Del-Rio

  • French surname5 spellings in the group

    Most recorded in France, United States, Italy, Canada

    Also written Del-Rio, Del Rio, Delrío

  • Italian surname2 spellings in the group

    Most recorded in Italy, United States, Spain, United Kingdom

    Also written Del-Rio

  • Arabic surname5 spellings in the group

    Most recorded in United States, Egypt, Morocco, Algeria

    Also written Del-Rio, Delrîo, Dèlrîo

38 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.

Other recorded senses(measured from records)

Delrio is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Latvian, pilsēta ASV ("Del Rio"), Teksasas štatā, 36100 iedzīvotāju (2014. g.)

    as a wordTēzaurs.lv (Dictionary and Thesaurus of Latvian, AiLab / LU MII)

Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.

Notable people with this name(measured from records)

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).

How to address them(machine-generated)

FormalDear Delrio,
InformalHello,

Evidence(measured from records)

Attested in 18 sources across 10 countries.

Official registers attesting Delrio
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 201020109.8K#3,620
US United StatesCensus Bureau — Surname Frequency 202020209.8K#3,548
US United StatesCensus Bureau — Surname Frequency 200020007.6K#4,336
UY UruguayINE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public)—101—
AR ArgentinaRENAPER — Apellidos (person counts, national)—80—
ES SpainINE — Apellidos más frecuentes (Padrón Municipal)—33#59,237
ES SpainINE — Padrón per-token widgets (current living counts, given + apellidos)—33#58,864
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 3

  • Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
  • Wikipedia surname tokens
  • 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

How do you pronounce Delrio?
A machine transcription gives /ˈdɛɫɹioʊ/ (IPA) for English.
In which country does Delrio have the most bearers?
In Spain, the national register counted about 26 thousand people named Delrio, more than in any other country we hold, where it is most often spelled delrio.
Where is Delrio most common?
Measured as a share of residents rather than as a count, Delrio is densest in Uruguay — about 1 in 1.7 thousand people — even though Spain holds more of our records for it.
How common is the name Delrio?
In Spain, the national register counted 25,733 people named Delrio, about 1 in 1.9 thousand residents.
How common is Delrio compared with other names?
In Puerto Rico, Delrio is the 153rd most common surname of 8,205 surnames recorded there.

What do you want to know about Delrio?

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

Please leave out anyone's personal details (see Privacy).

Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/delrio

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 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, “Delrio” — the 153rd most common surname in Puerto Rico. Data snapshot 2026-10-10.

See how Delrio parses inside a full name →