City of Koyukuk is a civil located in Yukon-Koyukuk County, Alaska. It appears on the Nulato D-4 NE USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 118.11 feet (36.00 m) above sea level. The nearest populated place is Koyukuk, approximately 1.4 miles to the S.