The first half of the 19th century

The first half of the 19th century saw the beginning of the development of urban areas on the economically strategic East River shore of Kings County, facing the adolescent City of New York confined to Manhattan Island. The New York Navy Yard operated in Wallabout Bay (border between Brooklyn and Williamsburgh) for the entire 19th century and two-thirds of the 20th century.

The first center of urbanization sprang up in the Town of Brooklyn, directly across from Lower Manhattan, which saw the incorporation of the Village of Brooklyn in 1816. Reliable steam ferry service across the East River to Fulton Landing converted Brooklyn Heights into a commuter town for Wall Street. Ferry Road to Jamaica Pass became Fulton Street to East New York. Town and Village were combined to form the first, kernel incarnation of the City of Brooklyn in 1834.

In parallel development, the Town of Bushwick, a little farther up the river, saw the incorporation of the Village of Williamsburgh in 1827, which separated as the Town of Williamsburgh in 1840 and formed the short-lived City of Williamsburgh in 1851. Industrial deconcentration in mid-century was bringing shipbuilding and other manufacturing to the northern part of the county. Each of the two cities and six towns in Kings County remained independent municipalities, and purposely created non-aligning street grids with different naming systems.

However, the East River shore was growing too fast for the three-year-old infant City of Williamsburgh; it, along with its Town of Bushwick hinterland, was subsumed within a greater City of Brooklyn in 1854.