Originating from Hebrew roots, the name Chelsia is a derivation of Chalkida, an ancient Greek city on the island of Euboea. It is composed of elements 'chela' meaning 'sandbank' and 'is' meaning 'isle', reflecting its coastal origins. The name gained popularity in the late 20th century, likely due to its unique sound and association with a historical place. It offers an appealing blend of familiarity and rarity, making it a distinctive choice for parents seeking an uncommon yet not overwhelmingly exotic name.
The name Chelsia saw a significant increase in popularity from the late 1980s to the early 1990s, with a peak of 41 births in 1992. However, it has since declined, with fewer than 10 births per year after 2003.