Ionesku
surname · Latin script
Ionesku is a surname written in the Latin script, with more bearers in Spain than in any other country.
- ESSpain1 in 34Kas Ionescu(measured from records)
- CHSwitzerland1 in 45Kas Ionescu
- NONorway1 in 51Kas Ionescu
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Ionesku itself, the figure is that spelling’s, and it is named. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- Spain (measured from records)
- 2 (measured from records)
- Record sources
- 57 (measured from records)
- 1 in 34K (inferred from the name graph)
1,461 named Ionescu
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Spain, as Ionescu
measured from records inferred from the name graph
Spellings & scripts
(measured from records)Locally spelled Ionescu in ES Spain, US United States.
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 2 languages in the etymology graph.
Where in the world
(measured from records)Ionesku 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 | |||
|---|---|---|---|---|---|
| ES Spain | 1,461as Ionescu | 1 in 34K | 1.5K | Ionescu | 4 |
| US United States | 853as Ionescu | 1 in 390K | 926 | Ionescu | 14 |
| CH Switzerland | 186as Ionescu | 1 in 45K | 186 | — | 1 |
| SE Sweden | 176as Ionescu | 1 in 58K | 176 | — | 1 |
| DK Denmark | 114as Ionescu | 1 in 51K | 114 | — | — |
| NO Norway | 108as Ionescu | 1 in 51K | 108 | — | — |
1,461 people counted by INE — Padrón per-token widgets (current living counts, given + apellidos). 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: INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; BFS — Familiennamen der Wohnbevölkerung (surnames); Skatteverket — Sök hur många som har ett visst namn (living population); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); SSB — Navnesøk (name-search service, living population). 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 Ionesku have the most bearers?
- In Spain, the national register counted about 1.5 thousand people named Ionescu, more than in any other country we hold.
- Where is Ionesku most common?
- No national register we hold counts the spelling Ionesku itself. The densest figure for its family of spellings is Spain's: the national register counts about 1 in 34 thousand people named Ionescu.
- How common is the name Ionesku?
- In Spain, the national register counted 1,461 people named Ionescu, about 1 in 34 thousand residents.
What do you want to know about Ionesku?
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/ioneskuThe 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, “Ionesku”. Data snapshot 2026-10-13.