Pioneer is a census-designated place[4] in Amador County, California.

It is located 5 miles (8.0 km) east-northeast of Pine Grove,[5] at an elevation of 2986 feet (910 m), along State Route 88.

It was a general store selling gas, water, and offering camping sites.

132 households (27.8%) were made up of individuals, and 67 (14.1%) had someone living alone who was 65 years of age or older.

In the California State Legislature, Pioneer is in the 8th Senate District, represented by Democrat Angelique Ashby,[9] and the 5th Assembly District, represented by Republican Joe Patterson.

[11] The scenery and environment around Pioneer includes a number of centuries-old tall pine trees and oak trees, as well as lakes for water sports and fishing.