There are 186 campsites with enough variety to suit anyone's tastes (96 sites have electricity). There are two modern shower buildings and a sewage dump station in the campground. Starting February 13, 2006 advance campsite reservations can be booked through the park reservation system. Half of the campsites are still available for self-registration on a first-come, first-serve basis. Two camp pads and rest rooms are accessible to the mobility-impaired.
The prime attraction of the 1,640-acre park is Lake Geode, a 186-acre lake built in 1950. Over the years, the lake has become well known for excellent fishing for largemouth bass, bluegill, crappie, channel catfish, bullhead, red-eared sunfish and tiger muskie.
Geode State Park is one of the most scenic and popular picnicking spots in southeast Iowa. Several open picnic shelters are available for group use. These may be reserved for a fee through the park manager. A picnic site accessible to the mobility impaired is available.
Several hiking trails challenge the outdoor lover at Geode. The main trail starts at the north end of the lake and follows it all the way to the dam. Part of this trail has been developed into a nature trail with a printed brochure identifying points of interest. This trail is accessible from several picnic areas along the lake. Another trail begins at the dam on the west side of the lake and ends at picnic shelter number one.