grundy municipal airport covers an area of at an elevation of 2,304 feet (702 m) above mean sea level. it has one asphalt paved runway designated 4/22 which measures 2,256 by 60 feet (688 x 18 m). for the 12-month period ending may 31, 2008, the airport had 4,177 general aviation aircraft operations, an average of 11 per day.