Cedar Glen, California is an unincorporated community in located in the San Bernardino National Forest resort area of San Bernardino County immediately east of Lake Arrowhead. The community lies at an elevation of 5403 ft (1647 m). The town's ZIP Code is 92321 and it lies entirely within area code 909. The nearest highway is California State Highway 173 which bisects Cedar Glen and passes through Lake Arrowhead.