Main city: Chatham
Timezone: Central
Phone type: Landline
Operator: Level 3 Communications

Chatham, a village in Sangamon County, Illinois, United States. It is located 2.8 miles south of Springfield, IL and has a retail trade area that extends into four other municipalities, including Springfield. The population was 11,500 as of the 2010 census and estimated to be 11,946 as of 2012. The village lies along the original alignment of historic U.S. Route 66 (Illinois Route 4). The loyalty of its residents can be seen through the involvement in local events, commitment to a strong, award-winning eduction system and the patronage of local businesses. ^source

Area code 217 is the North American telephone area code for much of western and central Illinois. The 217 area includes Illinois' capital Springfield, plus Champaign, Urbana, Decatur, Danville, Quincy, and Rantoul. 217 was one of the original area codes, which were created in 1947. ^source