Auburn is the county seat of Placer County, California. Auburn is known for its California Gold Rush history. The city, which is registered as a California Historical Landmark is 7.5 square miles with elevations reaching 1,400 feet. The population of Auburn is 13,832 and its residents enjoy a wide range of outdoor activities, including fishing, hiking, biking and more. Auburn features a strong art community and the wonderful Foothill Farmers’ Market.