Lakeside is an unincorporated community in southern Sheridan County, Nebraska, United States. It lies along Nebraska Highways 2 and 250, south of the city of Rushville, the county seat of Sheridan County, at an elevation of 3,881 feet (1,183 m). Lakeside has a post office, with ZIP code 69351. History Early settlers were John B. and Caroline Talbot Merrill, of Michigan and Norton, Suffolk, England respectively, circa 1890. Other early residents were the Nelson family, Danish immigrants. Daughters Lulu and Clara Nelson. P. McFadden 2018 The Lakeside post office was established in 1888. The community was named from the lake nearby. References Unincorporated communities in Sheridan County, Nebraska Unincorporated communities in Nebraska