Sierra County is a county located in the U.S. state of California. As of the 2020 census, the population was 3,236, making it California's second-least populous county. The county seat is Downieville; the sole incorporated city is Loyalton. The county is in the Sierra Nevada, northeast of Sacramento on the border with Nevada.

Located along the peaceful headwaters of the North Yuba River in the splendid Tahoe National Forest, Shaffer's High Sierra Camp is a springboard for boys and girls aged 8 to 17 to meet new friends from around the world, try activities that are new to them, and grow their social skills, self-confidence, independence, and appreciation of nature.