auburn,_washington | ispartof | pierce_county,_washington <tsp> united_states | capital | washington,_dc <tsp> auburn,_washington | country | united_states <sep> auburn is a city in king county, washington, united states (with a small portion crossing into neighboring pierce county) the population was 87,256 at the 2020 census auburn is a suburb in the seattle metropolitan area, and is currently ranked as the 14th largest city in the state of washington auburn is bordered by the cities of federal way, pacific, and algona to the west, sumner to the south, kent to the north, and unincorporated king county to the east the muckleshoot indian reservation lies to the south and southeast 
auburn is in pierce county. washington. in the u.s. the capital of which is washington. d.c.auburn is a city in king county, washington united states