Popcorn Island is a small, one-acre wooded island on the northern end of Killarney Lake accessible by boat only from the Killarney Lake boat launch.

The island features one primitive campsite and one picnic unit with a vault toilet, a scenic trail around the island, and a dock on the north shore (availability varies seasonally).

No fees are required, and the site is typically open May through September, making it an ideal destination for kayakers and canoeists seeking a quiet island camping experience.