Auburn is a city of 40,314 located in the U.S. state of Washington, in King County with some spill-over into Pierce County. Though founded before either Seattle or Tacoma had suburbs, Auburn is now often thought of as a suburb of these two cities. Auburn is roughly bordered by the suburbs of Federal Way, Pacific, and Algona to the west, Sumner to the south, unincorporated King County to the east, and Kent to the north. The Muckleshoot Indian Reservation is nearby. Auburn apartments for rent comparison page shows most up to date rent information on Auburn apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.