Deer Plain is an unincorporated community in Calhoun County, Illinois, United States. Deer Plain is located in southeastern Calhoun County near the confluence of the Illinois and Mississippi rivers. It was named Deer Plain because it was common to see deer grazing in the area.

Deer Plain, Illinois
Deer Plain, Illinois is located in Illinois
Deer Plain, Illinois
Deer Plain, Illinois
Deer Plain, Illinois is located in the United States
Deer Plain, Illinois
Deer Plain, Illinois
Coordinates: 38°55′54″N 90°31′59″W / 38.93167°N 90.53306°W / 38.93167; -90.53306
CountryUnited States
StateIllinois
CountyCalhoun
Elevation453 ft (138 m)
Time zoneUTC-6 (Central (CST))
 • Summer (DST)UTC-5 (CDT)
Area code618
GNIS feature ID422610[1]

References edit