The Trowbridge Square Historic District is centered on a Trowbridge Square, a small square park located southwest of downtown New Haven and northwest of the city's historic working port areas. The surrounding streets were laid out in apparent emulation of the nine-square plan by which New Haven was platted in the 17th century. These streets are mostly lined with modest 1-1/2 and 2-1/2 story frame houses, set close to the street, with vernacular touches of architectural styles dating from about 1830 to the turn of the 20th century. The principal non-residential structures in the area are those of the Sacred Heart church, school, and convent, which date to the same period. and
