Danbury is a city in Fairfield County, Connecticut, United States. It has an estimated population (as of July 1, 2005) of 78,736. Danbury is the fourth largest city in Fairfield County and is the seventh largest city in Connecticut. The city was named for the place of origin of many of the early settlers, Danbury, Essex in England. The city has been nicknamed Hat City, because it used to be a center of the hat industry, at one point producing 25% of America's hats. Danbury is home to Danbury Hospital, northeast of downtown, and Danbury High School, off Route 39.