Emergency Biohazard Cleanup Services in Crestline, CA

Crestline is an unincorporated mountain community — a census-designated place, not an incorporated city — in the San Bernardino Mountains of San Bernardino County, within the San Bernardino National Forest.

The 2020 census counted 11,650 people in Crestline, up from 10,770 in 2010, living in about 4,100 households.

Crestline sits at about 4,600 feet elevation among the pines, high above the San Bernardino valley floor, and is reached via State Routes 18 and 138.

The community's centerpiece, Lake Gregory, is a man-made lake created in 1937–38 by damming the east and west forks of Houston Creek under a Works Progress Administration project.

The lake was named for Arthur Gregory Sr., a Redlands citrus grower who developed the area — originally called Houston Flat — and ran a sawmill there to make wooden crates for his oranges.

Engineers expected the new lake to take three years to fill, but heavy rains in March 1938 filled it in just three days; a local legend holds that construction equipment left on the lake bed is still at the bottom.

The dam cost about $225,000 to build, and when federal funds ran out, Gregory personally lent the water district money to finish it; the road across the dam, today's Lake Drive, was completed in January 1939.

Lake Gregory Regional Park, owned by San Bernardino County, offers a swimming beach, water slides, fishing and a walking trail around the lake, and hosts Crestline's Independence Day celebration.

On the lake's southeast shore stands the San Moritz Lodge, a Tyrolean-style clubhouse that began as a 1920s resort club and was rebuilt on Lake Gregory in 1950.

Crestline students attend schools in the Rim of the World Unified School District, which serves the mountain communities along the crest of the San Bernardinos.