Barberton is a census-designated place (CDP) in Clark County, Washington, United States. The population was 5,661 at the 2010 census, up from 4,617 at the 2000 census.Based on per capita income, one of the more reliable measures of affluence, Barberton ranks 90th of 522 areas in the state of Washington to be ranked.GeographyBarberton is located in southwestern Clark County at, part of a cluster of unincorporated communities north of Vancouver. It is bordered by Mount Vista to the north and northwest, Brush Prairie to the east, Five Corners to the southeast, Walnut Grove to the south, and Salmon Creek to the southwest. Interstate 205 forms the southwest edge of the Barberton CDP, separating it from Salmon Creek and Walnut Grove. The closest access points to I-205 are Exit 32 in Walnut Grove to the south and Exit 36 in Mount Vista to the northwest. Downtown Vancouver is 9mi to the south of Barberton, and downtown Portland, Oregon, is to the south.According to the United States Census Bureau, the Barberton CDP has a total area of 11.2sqkm, all of it land.