Amboy (/ˈæmbɔɪ/)[3] is a census-designated place (CDP) in Clark County, Washington, United States.

It is located 33 miles northeast of Vancouver which is part of the Portland-Vancouver metropolitan area.

Amboy was named by Amos M. Ball, who settled in the area in 1879 and whose family operated the Post Office after it was established in 1880.

[5] Another story states that the town was named after Ball's son, referred to by locals as the A.M.

Amboy is located approximately 30 miles (48 km) northeast of Vancouver, Washington.

14.2% were of German, 14.1% Finnish, 12.6% American, 10.6% Irish, 9.5% English and 5.0% Norwegian ancestry according to Census 2000.