Castelblanco
surname · Latin script
Recorded for both men and women· direction only, no split published
Castelblanco is a surname written in the Latin script, with more bearers in Colombia than in any other country.
- COColombia≈1 in 13K(inferred from the name graph)
- CLChile≈1 in 148K
- PAPanama≈1 in 192K
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.
- Colombia (inferred from the name graph)
- Sources
- 120 (measured from records)
- ≈1 in 13K (inferred from the name graph)
≈3,900 people, est.
Highest-authority source
Colombia, est.
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Where in the world(measured from records)
Castelblanco 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 | ||||
|---|---|---|---|---|---|---|
| CO Colombia | #798 | ≈3,900 est. | ≈1 in 13K | 3 | Castelblanco | 80 |
| BR Brazil | — | ≈240 est. | ≈1 in 870K | — | Castelblanco | 13 |
| US United States | — | 168 | 1 in 2M | 189 | Castelblanco | 120 |
| CL Chile | — | ≈120 est. | ≈1 in 148K | — | Castelblanco | 34 |
| ES Spain | — | 102 | 1 in 490K | 102 | Castelblanco | 32 |
| PA Panama | — | ≈20 est. | ≈1 in 192K | 1 | Castelblanco | 11 |
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: the co-datosgov-candidates register; Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); Wikidata humans by citizenship — given & family names. 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).
Notable people with this name(measured from records)
- José Castelblancob. 1969COColombian racing cyclist
- Jorge Castelblancob. 1987PAPanamanian long-distance runner
- Catalina Castelblancob. 1997CLChilean actor
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).
Evidence(measured from records)
Attested in 13 sources across 7 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 189 | #101,718 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 168 | #106,096 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 108 | #141,788 |
| ES Spain | INE — Apellidos más frecuentes (Padrón Municipal) | — | 102 | #27,157 |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 102 | #27,065 |
| CO Colombia | Colombia — Función Pública SIGEP II public-servant name corpus (datos.gov.co) | — | 3 | #113 |
| PA Panama | Wikidata humans by citizenship — given & family names | — | 1 | #357 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 2
- 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
- In which country does Castelblanco have the most bearers?
- Mondonomo estimates about 3.9 thousand people named Castelblanco in Colombia, more than in any other country we hold, where it is most often spelled castelblanco.
- How common is the name Castelblanco?
- In the United States, the national register counted 168 people named Castelblanco in 2010, about 1 in 2.0 million residents.
- How common is Castelblanco compared with other names?
- In Colombia, Castelblanco is the 798th most common surname of 144,306 surnames recorded there.
What do you want to know about Castelblanco?
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/castelblancoThe 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, “Castelblanco” — the 798th most common surname in Colombia. Data snapshot 2026-10-10.