Chatsworth is a city in Murray County, Georgia, United States. It is part of the Dalton, Georgia Metropolitan Statistical Area. The population was 3,531 at the 2000 census, but was estimated around 3,890 as of the 2005 census. The city is the county seat of Murray County. According to a popular legend, the town received its name after a road sign with the word "Chatsworth" fell off a passing freight train nearby. Someone put the sign on a post, and the name stuck¹. Just East of Chatsworth is Fort Mountain, and the Fort Mountain State Park.