Graham Field is a privately owned public-use airport located one nautical mile (1.85 km) north of the central business district of North Sioux City, in Union County, South Dakota, United States.Facilities and aircraftGraham Field covers an area of 320acre at an elevation of 1,106 feet (337 m) above mean sea level. It has one runway designated 15/33 with a concrete and turf surface measuring 5,300 by 36 feet (1,615 x 11 m). For the 12-month period ending August 18, 2009, the airport had 324 general aviation aircraft operations, an average of 27 per month.
