Situated 9 miles southwest of Princeton and 3 miles northeast of the central business district of Bluefield, in Mercer County, West Virginia, Mercer County Airport is a public airport owned by the Mercer County Airport Authority. The airport is named as a general aviation facility, according to the National Plan of Integrated Airport Systems. Covering an area of about 144 acres, Mercer County Airport features one asphalt surfaced runway in good condition.
There are 38 aircraft based on the field of Mercer County Airport, such as multiple-engine airplanes, jet airplanes, ultralights, helicopters, and single-engine airplanes. The major aircraft operations Mercer County Airport provides are local general aviation, air taxi, military, and transient general aviation.