Coos Bay is located at 43°22'5" North, 124°12'56" West (43.368056, -124.215833).
According to the United States Census Bureau, the city has a total area of 15.93 mi2 (41.26 km2). 10.59 mi2 (27.43 km2) of it is land and 5.34 mi2 (13.84 km2) of it is covered by water. The total area is 33.53% water.
Coos Bay is located in the Pacific Standard Time (PST) timezone, GMT-08:00. It observes Daylight Saving Time (DST).