The community is located on the banks of the Little Kotlik River. There is no road access to Kotlik, although the village is easily accessible by barge. Residents use the river for commercial and private travel. Boardwalks are used in the community for pedestrian and small vehicles. Local residents travel in privately owned boats during the summer and use snowmobiles, and small all-terrain vehicles for travel during the winter. Bulk fuel and heavy cargo are brought in seasonally by barge. Air transportation of passengers, cargo, and mail is provided via the state-owned gravel airstrip. A flooding event in 2013 damaged many of the town's boardwalks.