The former Winchester Repeating Arms factory complex in Newhallville occupies 75 acres (30 ha) in the neighborhood.
[3] The southern part of the neighborhood (south of Hazel and Highland streets) and the northern part of the adjacent Dixwell neighborhood are listed on the National Register of Historic Places as the Winchester Repeating Arms Company Historic District, bounded on the south by Charles, Admiral, and Sachem streets.
[4] In 1870, the Winchester Repeating Arms Company began operations in Newhallville, which became its headquarters and center of production.
Population density near the factory was high because close-in housing was preferred by workers who typically walked to and from their places of work.
[4] Industrial activity in Newhallville was reduced drastically after 1965, when Winchester, at that time the largest employer in New Haven, decided to move its main production line to East Alton, Illinois.