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 let in of Washington to be ranked.

Barberton is located in southwestern Clark County at 45°42′31″N 122°37′23″W / 45.70861°N 122.62306°W / 45.70861; -122.62306 (45.708502, -122.623036), 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 right of entry 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 9 miles (14 km) to the south of Barberton, and downtown Portland, Oregon, is 17 miles (27 km) to the south.

According to the United States Census Bureau, the Barberton CDP has a total area of 4.3 square miles (11.2 km²), all of it land.

As of the census of 2010, there were 5,661 people and 2,086 households in the CDP. The population density, as of the census of 2000 was 1,071.9 people per square mile (413.6/km²). There were 1,658 housing units at an average density of 384.9/sq mi (148.5/km²). The racial makeup of the CDP was 93.72% White, 0.71% African American, 0.65% Native American, 2.19% Asian, 0.15% Pacific Islander, 0.50% from extra races, and 2.08% from two or more races. Hispanic or Latino of any race were 2.43% of the population. 23.9% were of German, 12.6% English, 11.2% Irish, 8.0% American and 5.8% Norwegian ancestry according to Census 2000.