Nulato is a city in Yukon-Koyukuk Census Area, Alaska, United States. At the 2020 census, the population was 239. Nulato was a location for tr…Nulato is a city in Yukon-Koyukuk Census Area, Alaska, United States. At the 2020 census, the population was 239. Nulato was a location for trade between the Koyukon people and Inupiat people of the Kobuk River area before the arrival of Europeans.