It is located three nautical miles (6 km) northeast of the central business district of Aledo, Illinois.

[2] Mercer County Airport covers an area of 15 acres (6 ha) at an elevation of 740 feet (226 m) above mean sea level.

It has one runway designated 17/35 with an asphalt surface measuring 2,480 by 45 feet (756 x 14 m).

For the 12-month period ending June 30, 2017, the airport had roughly 6,200 aircraft operations, an average of 17 per day.

For that same time period, there were three aircraft based on the field, all single-engine airplanes.