Blue Knob, Johnson County IL

View Blue Knob Topographic Map

Latitude: 37.3678302°N
Longitude: -88.7508902°W
Approx Elevation: 505 ft (154 m)
Topo Map Name: Mermet
Category: Summits

Map and location information for Blue Knob in Illinois: Blue Knob is one of the Summits in Johnson County, IL and can be found on the Mermet USGS topographic quad map. The GPS coordinates are 37.3678302 (latitude), -88.7508902 (longitude) and the approximate elevation is 505 feet (154 meters) above sea level. Have you been to Illinois's Blue Knob before? If so, we ask that you post a quick review of it below. Tell us the time of year, what your goal was, and how your trip went. Thanks for sharing your experience at Blue Knob!