According to police, Charmae Brown has been reported as missing on Tuesday.
Officials describe Brown as a black girl with black hair and brown eyes.
Police say she stands around two feet tall and weighs approximately 20 pounds.
Brown was last seen wearing pink pants, a black jacket with brown trim, and a Minnie Mouse hat. She is believed to be with her father, 51-year-old Alexander Johnson.
Police describe Johnson as a black man who stands about six feet tall and weighs around 230 pounds.
Anyone with information is asked to contact Norwalk police at 203-854-3113.