Morgan County Illinois (Historic Districts) has 2 places on the National Register of Historic Places.
The famous person Joseph Duncan is associated with one of more of the Morgan County historic places. Prominent architectural styles found in Morgan Country are Early-Mid 19th Century, Greek Revival and Italianate.
Jacksonville Downtown Historic District
(added 2018 - - #100002915)
Roughly bounded by Court, West, Morgan, Sandy, Main, Mauvaisterre and State Streets, Jacksonville