Simāo
surname · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Simāo is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Borrowed from Portuguese Simão.
- USUnited States1 in 571K(measured from records)
- CHSwitzerland1 in 48K
- NONorway1 in 249K
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.
- United States (measured from records)
- Sources
- 126 (measured from records)
- 1 in 48K (inferred from the name graph)
583 people, 2010
Highest-authority source
Switzerland
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Simao in US United States, CH Switzerland, AO Angola.
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 Portuguese Simão.
Sources 1
Attested across 30 languages in the etymology graph.
Where in the world(measured from records)
Simāo 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 | ||||
|---|---|---|---|---|---|---|
| US United States | — | 583 | 1 in 571K | 718 | Simao | 126 |
| CH Switzerland | — | 175 | 1 in 48K | 175 | Simao | 9 |
| ES Spain | — | 142 | 1 in 352K | 142 | — | 5 |
| AR Argentina | — | 132 | 1 in 345K | 132 | — | — |
| AO Angola | #601 | ≈39 est. | ≈1 in 843K | 5 | Simao | 13 |
| NO Norway | — | 22 | 1 in 249K | 22 | — | 1 |
| BE Belgium | — | 22 | 1 in 533K | 22 | — | 7 |
583 people counted by Census Bureau — Surname Frequency 2010, 2010. 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; Census Bureau — Surname Frequency 2020; BFS — Familiennamen der Wohnbevölkerung (surnames); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); RENAPER — Apellidos (person counts, national); Wikidata humans by citizenship — given & family names; SSB — Navnesøk (name-search service, living population); Familienaam.be — Belgian family-name frequency (population register). 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
- What does the name Simāo mean, and where does it come from?
- Borrowed from Portuguese Simão. Recorded by Wiktionary.
- In which country does Simāo have the most bearers?
- In the United States, the national register counted about 583 people named Simāo, more than in any other country we hold, where it is most often spelled simao.
- Where is Simāo most common?
- Measured as a share of residents rather than as a count, Simāo is densest in Switzerland — about 1 in 48 thousand people — even though United States holds more of our records for it.
- How common is the name Simāo?
- In the United States, the national register counted 583 people named Simāo in 2010, about 1 in 571 thousand residents.
- How common is Simāo compared with other names?
- In Angola, Simāo is the 601st most common surname of 23,432 surnames recorded there.
What do you want to know about Simāo?
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/sim%C4%81oThe 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, “Simāo” — the 601st most common surname in Angola. Data snapshot 2026-10-10.