Area Events Chamber Members Rock County, Nebraska . . . It's the Right Move! Rock County Oil Phillips 66 Station Bassett, NE Bassett, the county seat of Rock County, is located in north-central Nebraska in the heart of the sandhills. U.S. Highways 20 and 183 intersect in Bassett, and Nebraska Highway 7 extends from Bassett to the north through one of the most scenic areas of the Niobrara Valley.