South Boston is annexed by Boston.

Originally Mattapanock, then Dorchester Neck, it is originally part of Dorchester and the site of a few farms and and a location for gazing livestock. The periphery of the neighborhood is subsequently expanded with made land and becomes a center for shipping, industry, and as a railroad terminus, but the area is slow to develop as a residential neighborhood until connected to Boston by a series of bridges and then extension of the streetcar lines in the mid and latter half of the 19th century, when it begins to attract immigrant families, many of them Irish-American. Architectural historian Walter Kilham later writes, “[The failure of fashionable Bostonians to flock to] the breezy hills of South Boston with their splendid marine views is one of the unsolved questions in Boston’s history.” In recent years, the fort Point channel area has been dramatically developed as a mixed use area.