Alberton, MT

ZIP code 59820 serves De Borgia, a small, unincorporated community in Mineral County, western Montana, along Interstate 90 and the Clark Fork River. Prominent local features include De Borgia Campground, a riverside recreation site, and surrounding public lands within the Lolo National Forest. The area is rural and mountainous, with travel and outdoor access shaped by the river valley and nearby forested slopes.