Sierro
surname · Latin script
Meaning: first-person singular present indicative of serrar
(measured from records)Officially recorded in 8 countries · latest register: BFS, 2024
/sjero/(machine-generated) Spanish · model-generated
Sierro is a surname written in the Latin script, with more bearers in Switzerland than in any other country.
- CHSwitzerland1 in 14K(measured from records)
- ARArgentina1 in 233K
- ESSpain1 in 275K
carrying the name, as counted by each country's national register. 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.
- Switzerland (measured from records)
- Record sources
- 49 (measured from records)
- 1 in 14K (inferred from the name graph)
615 people, 2024
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Switzerland
measured from records inferred from the name graph
Meaning & origin
(measured from records)first-person singular present indicative of serrar
Cited for this meaning 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested in 1 language in the etymology graph.
Where in the world
(measured from records)Sierro 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 | |||
|---|---|---|---|---|---|
| CH Switzerland | 615 | 1 in 14K | 615 | Sierro | 25 |
| AR Argentina | 195 | 1 in 233K | 195 | — | — |
| ES Spain | 182 | 1 in 275K | 182 | Sierro | 8 |
| BR Brazil | 112 | 1 in 1.9M | 112 | — | 1 |
| US United States | — | — | listed | Sierro | 49 |
| CA Canada | — | — | — | Sierro | 6 |
615 people counted by BFS — Familiennamen der Wohnbevölkerung (surnames), 2024. 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: BFS — Familiennamen der Wohnbevölkerung (surnames); the us-wru-surnames-voterfile register; RENAPER — Apellidos (person counts, national); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname). 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)- Vincent Sierrob. 1995CHassociation football player
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)Evidence
(measured from records)10 registers and reference works attest this spelling, across 8 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 615 | #2,068 |
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 195 | — |
| ES Spain | INE — Apellidos más frecuentes (Padrón Municipal) | — | 182 | #17,781 |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 182 | #17,724 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 112 | #58,162 |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (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 Sierro mean, and where does it come from?
- first-person singular present indicative of serrar Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- How do you pronounce Sierro?
- It depends on the language: in Spanish /sjero/; in Portuguese /ziɛɾɾu/. Transcriptions are machine-generated except where a dictionary is named.
- In which country does Sierro have the most bearers?
- In Switzerland, the national register counted about 615 people named Sierro, more than in any other country we hold, where it is most often spelled sierro.
- Where is Sierro most common?
- Sierro is densest in Switzerland, where the national register counts about 1 in 14 thousand people carrying it.
- How common is the name Sierro?
- In Switzerland, the national register counted 615 people named Sierro in 2024, about 1 in 14 thousand residents.
What do you want to know about Sierro?
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/sierroThe 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, “Sierro”. Data snapshot 2026-10-13.