421st Avenue in Fairview Township, Hanson County, South Dakota

421st Avenue in Hanson County is a two-lane, asphalted local road. It runs in a north-south direction and crosses 246th Street, 248th Street, 249th Street, 250th Street, 252nd Street, 253rd Street and 255th Street. It ends in a cul-de-sac and connects Fairview Township and Jasper Township.