170 campgrounds with first-come sites in Washington

Okanogan-Wenatchee National Forest holds the most of them in the state. The Forest Service runs most of them. Sizes are lopsided, from 1 site at the small end to 149 at the large.

A campground is listed when Recreation.gov or the Forest Service records it as first-come, first-served. Campgrounds where some sites book online and the rest are first-come are listed too, marked partly reservable.