Kasia
Meaning
pure (Polish diminutive of Katarzyna/Katherine)
The formal names behind Kasia
Kasia is an established short form of this name.
Katarzyna · Polish origin · pure (Polish form of Katherine). The formal register behind Kasia, showing how Polish naming runs on two levels, the full name for documents and saints' days and the diminutive for daily life; one of the defining names of Poland's 1970s and 80s generation
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Kasia peaked in the 2000s.
See popularity in Brazil
Popularity in Brazil
635 people · the #11,337 first name in Brazil · about 1 in 333,333 · median age 27
Among people named Kasia living in Brazil at the 2022 census, more were born in the 1990s than in any other decade.
Source: IBGE, Censo Demográfico 2022
When you meet Kasia
Most people given the name Kasia in the United States are teenagers or young adults today.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Kasia deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Kasia 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 Kasia fits with your family’s names and surname.
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