To the above poster, Quincey is not a girl name just because people use it on girls. I mean, I know a girl named James, but does that make it any less of a boy name? Nope. Don't be so ignorant. =/
― Anonymous User 5/6/2008
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I know a girl (yes a GIRL, not a BOY) named Quincey. I think the name "Quincey" is a very perky name, and maybe it's just because I don't know any guys with this name, but it is definitely a girl's name.
https://www.popular-babynames.com/name/quincey
https://forebears.io/x/forenames/quincey
According to the USA Social Security Administration, 30 girls and 24 boys were recorded with the name Quincey in 2015.
https://www.names.org/n/quincey/about
https://www.nancy.cc/baby-name/quincey/