I’d say quite likely a bear. Two points:
First, given the volume of scat it is a large animal, and it looks nothing like elk or moose scat (other large land mammals in the US).
Second, bears love berries and scat with all those berries in it is a very good indicator of a bear, regardless of size of the scat (I’ve seen some fairly petite bear scat, likely from smaller young bears).
Bears range widely across many biomes and most try hard to avoid people. In my high desert suburbs I’ve seen coyote, deer, bear, and mountain lion over the years.
As the Washington State wildlife folks (https://wdfw.wa.gov/species-habitats/species/ursus-americanus#desc-range) note, “Black bears are common - even in suburban areas…”