The best source for a list of all KOA campgrounds in the state is the KOA website, KOA.com. In addition to listing campgrounds by state, users can view Canadian campgrounds.
To search KOA campgrounds by state, click the KOA's in the US link located at the bottom of the Find/Reserve a KOA box. This opens a new page featuring a map of the United States and an alphabetical list of states to the left. Only states with KOA campgrounds appear on the list.
After you click a state, the map centers itself on that state, and red dots appear to indicate the location of KOA campgrounds. The campgrounds are also listed to the left. The map can be zoomed in or out depending on how much area you want to view. For more information about each campground, click the campground's red dot on the map or the blue Campground Details link in the side listing.
To compare details of multiple campgrounds, click the Show List tab located in the blue map navigation bar. With Show List enabled, the map is pushed to the side, and the campground list expands to three columns. The first column has the campground's physical address; the second column has a general information phone number, a reservation phone number and email address; and the third column features a Reserve Now link and informational icons which make it easy to compare campground features.