In April, 1919, in the wake of the end of World War I, a resolution was introduced in the California State Senate to change the town's name to Argonne. The resolution was defeated after the local senator insisted the name was not German, but actually came from Weimah, a chief of the Grass Valley tribe of Southern Paiute Native Americans, who had been hospitable to the area's first white settlers. The senator further stated that postal authorities had misspelled the name. Demographics Its ZIP code is 95736 and its area code 530. As of 2010, its population is 209. References Unincorporated communities in Placer County, California Colfax, California Unincorporated communities in the Sacramento metropolitan area Unincorporated communities in California