[1] It is owned by the Union County Airport Authority and located one nautical mile (2 km) southeast of the central business district of Marysville, Ohio.

[4][5] Union County Airport covers an area of 54 acres (22 ha) at an elevation of 1,021 feet (311 m) above mean sea level.

[1] The airport has a fixed-base operator that sells fuel and offers services such as general maintenance, hangaring, courtesy transportation, conference rooms, a crew lounge, and more.

[7] For the 12-month period ending June 5, 2023, the airport had 32,850 aircraft operations, an average of 90 per day: 90% general aviation, 8% military, and 2% air taxi.

At that time there were 57 aircraft based at this airport: 55 airplanes, including 54 single-engine and 1 multi-engine; 1 jet; and 1 glider.