Glenbrook, Lake County, California


Glenbrook is an unincorporated community in Lake County, California. It is located south-southeast of Kelseyville, at an elevation of 2293 feet.
A post office operated at Glenbrook from 1877 to 1911.
Astorg Spring is located southeast of Glenbrook. Water from this disused mining shaft was sent by tanker to San Francisco for carbonation and distribution to the public.