Stark's Twin Oaks Airpark (FAA LID: 7S3) is a privately owned public-use airport located 4 miles (6.4 km) south of the city of Hillsboro in Washington County, Oregon, United States.

[1] Herb and Ruth's son Robert Stark and his wife Betty took over ownership of Twin Oaks, and still owned the airpark as of May 2023.

[1][2] Twin Oaks hosts a fly-in breakfast on the first Saturday of each month, organized by EAA Chapter 105.

[1][2] Twin Oaks sees about 61 flights per day on the single runway.

[6] On October 5, 2017, a 1963 Piper 250 Comanche crashed after coming up short on approach, with minor injuries reported.