CONUS stands for “contiguous United States.” This includes the 48 US states on the continent of North America and Washington, D.C.
OCONUS means “outside the contiguous United States”. It does not mean foreign countries. It refers to states and U.S. territories that are not a part of the continental U.S., such as Hawaii, Alaska, Guam, Puerto Rico, America Samoa, and Saipan. These territories are considered overseas.