Forsyth is a village in Macon County, Illinois, United States whose population was 3,490 at the 2010 census, and 3,496 in 2018. It is included in the Decatur, Illinois Metropolitan Statistical Area pop. 109,456.
Wikipedia https://en.wikipedia.org/wiki/Forsyth,_Illinois
Coordinates 39°55'57.132" N -88°57'4.288" E