City of Koyukuk, Alaska

Koyukuk is located at 64°52'49" North, 157°42'2" West (64.880278, -157.700833).

According to the United States Census Bureau, the city has a total area of 6.28 mi² (16.27 km²). 6.24 mi² (16.16 km²) of it is land and 0.04 mi² (0.11 km²) of it is covered by water. The total area is 0.70% water.

Koyukuk is located in the Alaska Standard Time (Alaska ST) timezone, GMT-09:00. It observes Daylight Saving Time (DST).