Niantic Map
Niantic is a village in Macon County, Illinois, United States whose population was 738 at the 2000 census. It is included in the Decatur, Illinois Metropolitan Statistical Area.
Niantic is located at 39°51?18?N 89°09?56?W / 39.854922°N 89.165546°W / 39.854922; -89.165546.
According to the United States Census Bureau, the village has a total area of 1.1 square miles (2.8 km²), all of it land.
Nearby cities include Decatur, Blue Mound, Forsyth, Mechanicsburg, Buffalo.