Merced County High School, also known as the County Library Building, was a historic building located at 2125 M St. in Merced, California, United States. Built in 1897, the school was the first public high school in Merced County. The brick and wood building was designed in the Richardsonian Romanesque style and featured a hip roof with cross gables, a rounded entry, windows arranged in a ribbon patter, and a since-removed wooden tower. The school's brick exterior was later plastered over and its roof painted red, giving the building a Mission Revival appearance. The building served as a high school until 1920; in the following year, the county library moved into the building, where it remained until 1976.