The original Fairfield County consisted of the towns of Rye, Greenwich, Stamford, Norwalk, Fairfield, and Stratford. In 1673, the town of Woodbury was incorporated and added to Fairfield County. In 1683, New York and Connecticut reached a final agreement regarding their common border. This resulted in the cession of the town of Rye and all claims to the Oblong to New York. From the late 17th to early 18th centuries, several new towns were incorporated in western Connecticut and added to Fairfield County, namely Danbury (1687), Ridgefield (1709), Newtown (1711), and New Fairfield (1740). In 1751, Litchfield County was constituted, taking over the town of Woodbury. The final boundary adjustment to Fairfield County occurred in 1788 when the town of Brookfield was incorporated from parts of Newtown, Danbury, and New Milford, with Fairfield County gaining territory from Litchfield County.
The original Fairfield County consisted of the towns of Rye, Greenwich, Stamford, Norwalk, Fairfield, and Stratford. In 1673, the town of Woodbury was incorporated and added to Fairfield County. In 1683, New York and Connecticut reached a final agreement regarding their common border. This resulted in the cession of the town of Rye and all claims to the Oblong to New York. From the late 17th to early 18th centuries, several new towns were incorporated in western Connecticut and added to Fairfield County, namely Danbury (1687), Ridgefield (1709), Newtown (1711), and New Fairfield (1740) In 1751, Litchfield County was constituted, taking over the town of Woodbury. The final boundary adjustment to Fairfield County occurred in 1788 when the town of Brookfield was incorporated from parts of Newtown Danbury, and New Milford, with Fairfield County gaining territory from Litchfield County.