What does Quincy mean?
Quincy \qu(in)-cy\ as a girls' name (also used more commonly as boys' name Quincy). Quincy's roots are Irish, Gaelic and Old French, and the meaning of Quincy is "counsel; estate of the fifth son". Quincy is a variation of Quinn (Irish, Gaelic). Quincy is also a derivative of Quincey (Old French): place name.
Quincy is an uncommon first name for females but a very popular surname for both adults and children (#25006 out of 150436, Top 17%). (2000 U.S. Census)
The only prominent alternative form of Quincy (#unlisted) is Quinn (#126 the previous year). These girl names reached the peak of their popularity in 2013 (usage of 0.882%) and are somewhat less popular today (usage 0.874%, down 0.9%). Quinn (#126) is the most chic name for newborns in this list. Shown below is a comparison of the usage of the girl name Quincy and affiliated names. (Top 1000 Birth Names Statistics, 2014)
A recommended similar baby name is Quinby. Like Quincy, this name is not commonly used.