Douglas is a city in Allegan County in the U.S. state of Michigan. The population was 1,232 at the 2010 census. The city is surrounded by Saugatuck Township and the city of Saugatuck is adjacent on the north.On December 13, 2004, residents voted to adopt a charter changing the status of the village into a city form of government. Under Michigan law, cities are independent entities whereas villages are part of the township. The official name is City of the Village of Douglas.