Deering is a city in the Northwest Arctic Borough in the U.S. state of Alaska. It is located on a sandy spit on the Seward Peninsula where t…Deering is a city in the Northwest Arctic Borough in the U.S. state of Alaska. It is located on a sandy spit on the Seward Peninsula where the Inmachuk River flows into Kotzebue Sound, 92 km southwest of Kotzebue.