Jefférson

given name · Latin script

Jefférson is a given name written in the Latin script, with more bearers in Brazil than in any other country. Recorded meaning: Unadapted borrowing from English Jefferson.

rarermore common
  • 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)

82,811 people, 2022

Sources
248 (measured from records)

Highest-authority source

1 in 317 (inferred from the name graph)

Ecuador

measured from records inferred from the name graph

Name dossier (print, CSV)

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, Jëffërsön in EC Ecuador, CO Colombia and Jeffersón in SV El Salvador.

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.

Sources 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 19 languages in the etymology graph.

Where in the world(measured from records)

Jefférson 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.

Where Jefférson is recorded, by country
CountryMost common spellingSources
BR Brazil82,8111 in 2.6K83KJefferson203
CN China≈64,000 est.≈1 in 22K—Jefferson11
EC Ecuador53,3041 in 31753KJëffërsön65
CO Colombia≈22,000 est.≈1 in 2.2K7Jëffërsön135
US United States19,2671 in 17K55KJefferson248
CR Costa Rica3,4251 in 1.5K3.4K—52
SV El Salvador≈1,700 est.≈1 in 3.8K—Jeffersón33

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

None of the official registers or reference works in our corpus lists Jefférson under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Frequently asked questions

What does the name Jefférson 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 Jefférson a male or female name?
Jefférson 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 Jefférson have the most bearers?
In Brazil, the national register counted about 83 thousand people named Jefférson, more than in any other country we hold, where it is most often spelled jefferson.
Where is Jefférson most common?
Measured as a share of residents rather than as a count, Jefférson is densest in Ecuador — about 1 in 317 people — even though Brazil holds more of our records for it.
How common is the name Jefférson?
In Brazil, the national register counted 82,811 people named Jefférson in 2022, about 1 in 2.6 thousand residents.

What do you want to know about Jefférson?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/jeff%C3%A9rson

The 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, “Jefférson”. Data snapshot 2026-10-10.

See how Jefférson parses inside a full name →