Phillipsville is a census-designated place in Humboldt County, California, United States. It is located on the South Fork of the Eel River, 7.5 miles (12.1 km) north of Garberville, at an elevation of 289 feet (88 m). It is the southernmost town on the Avenue of the Giants. Near the town is the Chimney Tree redwood, so named due to its resemblance to that object. The ZIP Code is 95559. The community is inside area code 707. The population was 124 at the 2020 census.