Phillipsville (formerly Kettintelbe, Philippsville, and Phillips Flat) is a census-designated place in Humboldt County, California. 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 upon the Avenue of the Giants. Near the town is the Chimney Tree. This is a redwood tree that resembles a chimney. The ZIP Code is 95559. The community is inside area code 707. The population was 140 at the 2010 census.

A make known office operated at Phillipsville from 1883 to 1912, and from 1948 to the present. The publish was originally Philips Flat, in tribute of George Stump Philips who granted at the place in 1865. The say was misused to Kettintelbe after a local Native American village, but reverted to Phillipsville bearing in mind the publish office reopened in 1948. Phillipsville was home to many popular hotels, including the Riverwood Inn, Madrona Motel, and the DeerHorn Lodge.

The 2010 United States Census reported that Phillipsville had a population of 140. The population density was 188.3 inhabitants per square mile (72.7/km²). The racial makeup of Phillipsville was 121 (86.4%) White, 0 (0.0%) African American, 4 (2.9%) Native American, 1 (0.7%) Asian, 0 (0.0%) Pacific Islander, 0 (0.0%) from additional races, and 14 (10.0%) from two or more races. Hispanic or Latino of any race were 3 persons (2.1%).

The Census reported that 140 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized action quarters, and 0 (0%) were institutionalized.