Pleasant Grove is an unincorporated community in Sutter County, California, United States. Pleasant Grove is southeast of Nicolaus. Pleasant Grove has a post office with ZIP code 95668. History The community originated as a wagon and freight stop, and was nicknamed "Gouge-Eye" after a saloon fight in which one man gouged out the eye of another. The post office opened as Pleasant Grove Creek in 1867, became Pleasant Grove in 1875, and moved east in 1940. References Unincorporated communities in California Unincorporated communities in Sutter County, California