Castrillo
surname · Latin script
Recorded for both men and women· direction only, no split published
Castrillo is a surname written in the Latin script, with more bearers in Costa Rica than in any other country. Recorded meaning: Borrowed from Spanish Castrillo.
- CRCosta Rica1 in 1.1K(measured from records)
- UYUruguay1 in 6.7K
- ESSpain1 in 12K
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- Costa Rica (measured from records)
- 2 (measured from records)
- Sources
- 4 (measured from records)
- 1 in 1.1K (inferred from the name graph)
4,821 people
recorded for this name
Highest-authority source
Costa Rica
measured from records inferred from the name graph
Spellings & scripts(measured from records)
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)
Borrowed from Spanish Castrillo.
Sources 1
Where in the world(measured from records)
Castrillo 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 | |||
|---|---|---|---|---|---|
| CR Costa Rica | 4,821 | 1 in 1.1K | 4.8K | — | — |
| ES Spain | 4,211 | 1 in 12K | 4.2K | Castrillo | 4 |
| US United States | 1,022 | 1 in 325K | 1K | Castrillo | 2 |
| AR Argentina | 940 | 1 in 48K | 940 | — | — |
| UY Uruguay | 504 | 1 in 6.7K | 504 | — | — |
4,821 people counted by TSE — electoral roll (padrón) names. 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: TSE — electoral roll (padrón) names; 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; RENAPER — Apellidos (person counts, national); 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).
Other recorded senses(measured from records)
Castrillo 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 osp, camp
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
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)
- Demetrio Alonso Castrillob. 1841ESSpanish politician (1841-1916)
- Agostino Ernesto Castrillob. 1904IT20th century Italian Roman Catholic bishop (1904–1955)
- Chumy Chúmezb. 1927ESnot in their usual nameSpanish cartoonist
- Roberto Castrillob. 1941CUCuban sport shooter
- Eduardo Castrillob. 1942PHFilipino sculptor
- Manuela Carmenab. 1944ESnot in their usual nameSpanish judge and politician, mayor of Madrid
- Carlos Castrillob. 1985GTGuatemalan footballer
- Jaime Castrillob. 1996ESSpanish cyclist
- Pablo Castrillob. 2001ESSpanish cyclist
- Paula Castrillo OrtegaESSpanish politician
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 21 sources across 13 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| CR Costa Rica | TSE — electoral roll (padrón) names | — | 4.8K | #250 |
| ES Spain | INE — Apellidos más frecuentes (Padrón Municipal) | — | 4.2K | #1,254 |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 4.2K | #1,254 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 1K | #24,966 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 1K | #24,483 |
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 940 | — |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 754 | #29,516 |
| UY Uruguay | INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public) | — | 504 | — |
| CR Costa Rica | TSE — Consulta de nombres (Padrón Nacional Electoral name enumeration) | — | — | — |
| US United States | wru 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
- What does the name Castrillo mean, and where does it come from?
- Borrowed from Spanish Castrillo. Recorded by Wiktionary.
- In which country does Castrillo have the most bearers?
- In Costa Rica, the national register counted about 4.8 thousand people named Castrillo, more than in any other country we hold.
- Where is Castrillo most common?
- Castrillo is densest in Costa Rica, where the national register counts about 1 in 1.1 thousand people carrying it.
- How common is the name Castrillo?
- In Costa Rica, the national register counted 4,821 people named Castrillo, about 1 in 1.1 thousand residents.
What do you want to know about Castrillo?
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/castrilloThe 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, “Castrillo”. Data snapshot 2026-10-10.