The California Gold Rush began on January 24, 1848 when gold was discovered by James W. Marshall at Sutter's Mill. Nearly 300,000 people immigrated to California from around the world in hopes of striking it rich. The population of California skyrocketed from 1,600 to over 100,000 in just one year. Two routes were taken by prospectors - an arduous months-long sea voyage around South America or an overland journey of over 2,000 miles along the Oregon-California Trail. While some prospectors did find gold and become wealthy, most did not strike it rich. The massive influx of immigrants transformed California economically and politically, leading to its statehood in 1850.