Alderpoint (formerly, Alder Point) is a census-designated place in Humboldt County, California at an elevation of 472 feet (144 m), 11 miles (18 km) east-northeast of Garberville. The ZIP Code is 95511, it is inside area code 707 and had a population of 186 in the 2010 census.
The town began in 1910 as a center for construction of the Northwestern Pacific Railroad. The first post office at Alderpoint opened in 1911.
The Rancho Sequoia area of Alderpoint is called "Murder Mountain" from the actions of the Carson serial killers including the murder of 26-year-old Clark Stephens on May 17, 1982, and for other disappearances, murders and rumored murders. Two high-profile missing persons are Robert 'Bobby' Tennison, a 38-year-old father of four, missing since January 2009 and Garret Rodriquez, a 29-year-old from San Diego, California, who was reported missing on April 25, 2013 by his father. In their last conversation in December 2012, Mr. Rodriguez told his father he was headed to "Murder Mountain" to work on a marijuana grow. After he went missing, his truck was found in June 2013. On December 1, 2013 human remains were found in a grave on a private property on Jewitt Ranch Road, one day after private investigators received an anonymous tip to the exact location of a grave believed to be Rodriquez's. On December 17, the remains were identified as Rodriquez and he was confirmed a victim of a homicide. It is suspected that the anonymous tip came from a confession extracted from the man responsible for the murder, who gave up the information after being kidnapped, shot twice and threatened by a group of eight local vigilantes on Thanksgiving Day.
Across the valley from Rancho Sequoia on Pratt Mountain, 24-year-old Dirk Dickenson was shot in the back by a federal agent during a military-style federal raid which arrived at his property by helicopter. Dickenson was found blameless by a Federal Department of Justice investigation; charges against his killer were moved to federal court and ultimately dismissed. He was posthumously on the cover of Rolling Stone Magazine and is recognized as the first victim of the U.S. war on drugs.