Casey is popular in several English-speaking countries, including the United States, Ireland, and the United Kingdom. It is appreciated for its versatility and gender-neutral appeal.

Casey is a name that can be embraced by individuals of different genders, as it is considered unisex. It is often chosen by parents who prefer names that do not lean heavily towards a specific gender. The name Casey gained popularity in the United States during the 1980s and 1990s, influenced by cultural references such as the television show "The Bionic Woman" and the character Casey Jones from the Teenage Mutant Ninja Turtles franchise.

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