From the Ridgefield Answerbook...
Where did the name come from?
Ridgefield was named for the several north-south ridges running near the center of town.
When was the town founded and by whom?
Coastal land for farming was becoming scarce at the turn of the 18th Century, and Norwalk residents looked to the north for new fields to plow. On Sept. 30, 1708, Chief Catoonah, a Ramapoo Indian, deeded about 20,000 acres in exchange for 100 pounds of Connecticut currency to 32 colonists, mostly from Norwalk. Ridgefield was officially created a year later by the General Assembly. In 1714, it received a town patent from Queen Anne of England.
How big is Ridgefield?
Ridgefield is 34 square miles and occupies about 5.3% of Fairfield County. The altitude ranges from 379 to 890 feet.