Ansonia

Ansonia, city, coextensive with the town (township) of Ansonia, New Haven county, southwestern Connecticut, U.S., on the Naugatuck River. The area was a part of the township of Derby until it was incorporated as a separate township in 1889. Ansonia’s separate identity had been established in 1843, when Anson Greene Phelps of New York City refused to pay an exorbitant price for land in the village of Birmingham in Derby township and established his copper...