The Washington State Department of Natural Resources (DNR) has recognized two local cities as a Tree City USA. The designation is given by the Arbor Day Foundation to cities that designate staff to care for trees, appoint a citizen tree board to advocate for community forestry, establish a tree ordinance, spend at least $2 per capita on tree care, and celebrate Arbor Day.

Those getting the designation, their their years on the Tree City list are:

Issaquah/19

Newcastle/5