62,800 people live in the 1629 square miles that make up Coos County, which was established in 1853. The annual rainfall is 56.8 inches. The county seat is Coquille. The Port of Coos Bay is considered to be the best natural port from Puget Sound toSan Francisco.

Coos Bay and North Bend form a single urban area that is the largest on the Oregon Coast.

The Oregon Dunes National Recreation Area stretches from the northern boundary of Coos County to the Coos River, where it empties into the Pacific.

Coos County is connected to other parts of the Oregon Coast by Highway 101, and to Interstate 5 by Highway 42.