Jeffersón
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
(measured from records)Officially recorded in 1 country
Jeffersón is a male given name written in the Latin script, with more bearers in Brazil than in any other country. Recorded meaning: Unadapted borrowing from English Jefferson.
- ECEcuador1 in 317(measured from records)
- CRCosta Rica1 in 1.5K
- COColombia≈1 in 2.2K
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.
- Brazil (measured from records)
- Record sources
- 248 (measured from records)
- 1 in 317 (inferred from the name graph)
82,811 people, 2022
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Ecuador
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Jefferson in BR Brazil, US United States, CN China and Jëffërsön in EC Ecuador, CO Colombia.
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)Unadapted borrowing from English Jefferson.
Cited for this meaning 6
- A concise dictionary of first names
- DUDEN Lexikon der Vornamen
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- Wiktionary
Attested across 21 languages in the etymology graph.
Where in the world
(measured from records)Jeffersón 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 | |||
|---|---|---|---|---|---|
| BR Brazil | 82,811 | 1 in 2.6K | 83K | Jefferson | 203 |
| CN China | ≈64,000 est. | ≈1 in 22K | — | Jefferson | 11 |
| EC Ecuador | 53,304 | 1 in 317 | 53K | Jëffërsön | 65 |
| CO Colombia | ≈22,000 est. | ≈1 in 2.2K | 7 | Jëffërsön | 135 |
| US United States | 19,267 | 1 in 17K | 55K | Jefferson | 248 |
| CR Costa Rica | 3,425 | 1 in 1.5K | 3.4K | — | 52 |
| SV El Salvador | ≈1,700 est. | ≈1 in 3.8K | — | Jeffersón | 33 |
82,811 people counted by IBGE — names by decade (Kaggle mirror), 2022. 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: IBGE — names by decade (Kaggle mirror); Census Bureau — First Name Frequency 2020 by sex; Census Bureau — Surname Frequency 2010; INEC — civil registry names; TSE — electoral roll (padrón) names; the co-datosgov-candidates 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
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Jeffersón mean, and where does it come from?
- Unadapted borrowing from English Jefferson. Recorded by A concise dictionary of first names and DUDEN Lexikon der Vornamen and 4 other sources.
- Is Jeffersón a male or female name?
- Jeffersón is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- In which country does Jeffersón have the most bearers?
- In Brazil, the national register counted about 83 thousand people named Jeffersón, more than in any other country we hold, where it is most often spelled jefferson.
- Where is Jeffersón most common?
- Measured as a share of residents rather than as a count, Jeffersón is densest in Ecuador — about 1 in 317 people — even though Brazil holds more of our records for it.
- How common is the name Jeffersón?
- In Brazil, the national register counted 82,811 people named Jeffersón in 2022, about 1 in 2.6 thousand residents.
What do you want to know about Jeffersón?
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/jeffers%C3%B3nThe 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, “Jeffersón”. Data snapshot 2026-10-13.