Whitneyville is a neighborhood in the southeastern portion of the town of Hamden, Connecticut. It started in the early nineteenth century as a factory town for workers in Eli Whitney's gun factory. Around the turn of the twentieth century, it evolved into a trolley suburb of New Haven. Today it is primarily residential, with a mixture of single-family homes and small apartment and condominium buildings. There is some commercial development centered around the intersection of Whitney and Putnam avenues.