Chalk landing place
A modern spelling variant of Chelsea, which originates from an Old English place name meaning a landing place for chalk or limestone. It gained popularity as a given name in the late 20th century, famously associated with a fashionable district in London.
Less common today
Chelsae isn't in the latest US Top 1000. It last peaked at #2,343 in 1990.
US births per 5-year period, 1990βpresent (SSA data).