Jeferson
Meaning
Brazilian spelling of Jefferson, "son of Geoffrey"; written the way Brazil hears it, and almost five times more common there than the double-f original
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Jeferson has stayed rare in US records the whole time: no peak decade to name.
Popularity in Brazil
218,330 people · the #147 first name in Brazil · about 1 in 930 · median age 29
Among people named Jeferson living in Brazil at the 2022 census, more were born in the 1990s than in any other decade.
The census also counted 2,132 born between 2020 and August 2022, too recent a span to chart.
Source: IBGE, Censo Demográfico 2022
See Jeferson in official records · Spain, Mexico City and Argentina
Spain
330 residents · #3,123 among men · mean age 32.7
Residents of Spain on 1 January 2025. Spain publishes how old a name’s living bearers are, not a birth series, so there is no year chart.
Source: INE (Spain), Censo de Población anual, 1 January 2025
Mexico City City, not national
3 registrations in 2022 · charted as share per 10,000 name registrations in the city that year
Civil-registry acts in Mexico City by registration year. Counts are lower bounds (names under 6 in a month and borough are removed at source) and count name-instances, not people; compound names are split, so “Maria Jose” counts under each part. 2023, a partial extract through 3 Mar with no cell on record for this name, is excluded.
Source: Registro Civil of Mexico City, open data portal, registered given names 2000-2023
Argentina
3 newborns given the name in 2024 · charted as share per 10,000 name registrations that year
Given-name components of births in Argentina 2012–2024; national cells are lower bounds and no sex split is published.
Source: RENAPER (Argentina), Dirección Nacional de Población, given names 2012-2024
Not on the record in Puerto Rico: that registry withholds small counts, so rare uses may sit below its floor.
When you meet Jeferson
Most people given the name Jeferson in the United States are children or teenagers today. The name belongs to this generation.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
Keep exploring
The Jeferson deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Jeferson truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Jeferson fits with your family’s names and surname.
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