Isaias
Meaning
Spanish variant of Isaiah, "Yahweh is salvation"
The story
Isaias is Isaiah in Spanish, Yahweh is salvation, the prophet's name worn the Iberian way, and its American record is one of the longest staircases the ledger holds: higher every decade from the 1910s through the 2010s, ten consecutive rises, about 18 becoming 5,200. This decade stands at 4,100 so far, closing on the full 2010s with years to run, and the record is absolute in one respect: about 18,600 boys and not one girl, ever. Isaiah, the English spelling, is a giant at about 254,400 with its own story here. Ten decades of rising without a single stumble is the community-carried signature at its purest, the same patient stairs Rafael, Esteban and Eduardo climb on this shelf: a prophet's name, carried up one generation at a time.
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Isaias peaked in the 2020s.
Popularity in Brazil
77,888 people · the #394 first name in Brazil · about 1 in 2,604 · median age 38
Among people named Isaias living in Brazil at the 2022 census, more were born in the 1980s than in any other decade.
The census also counted 3,524 born between 2020 and August 2022, too recent a span to chart.
Source: IBGE, Censo Demográfico 2022
When you meet Isaias
Most people given the name Isaias 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.
The Isaias deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Isaias 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 Isaias fits with your family’s names and surname.
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