Map of Yukon-Koyukuk Census Area, Alaska

Yukon–Koyukuk Census Area (/ˈjuːkɒn ˈkaɪjəkək/) is a census area in the U.S. state of Alaska. As of the 2020 census, the population was 5,343, down from 5,588 in 2010. With an area of 147,842.51 sq mi (382,910.3 km), it is the largest of any county or county-equivalent in the United States, or about the same size as the entire state of Montana. It is part of the unorganized borough of Alaska and therefore has no borough seat. Its largest communities are the cities of Galena, in the west, and Fort Yukon, in the northeast.

Yukon-Koyukuk Census Area overview:
Name:	Yukon-Koyukuk Census Area
FIPS code:	02-290
State:	Alaska
Named for:	Yukon River and Koyukuk River
Largest city:	Fort Yukon
Total Area:	147,805 sq mi (382,810 km²)
Land Area:	145,505 sq mi (376,860 km²)
Total Population:	5,343
Population Density:	0.038/sq mi (0.015/km²)

Yukon-Koyukuk Census Area location map. Where is Yukon-Koyukuk Census Area?

Yukon-Koyukuk Census Area location on the Alaska map. Where is Yukon-Koyukuk Census Area. — Location of Yukon-Koyukuk Census Area in Alaska.

Yukon-Koyukuk Census Area Road Map

Yukon-Koyukuk Census AreaStreet Map. — Street map of Yukon-Koyukuk Census Area, Alaska. Source: OpenStreetMap (OSM)

Geography

According to the U.S. Census Bureau, the census area has 147,805 square miles (382,810 km), of which 145,505 square miles (376,860 km) is land and 2,300 square miles (6,000 km) (1.6%) is water. The area is roughly the same size as the entire U.S. state of Montana, itself the fourth largest state, or the country of Japan, and makes up slightly more than 1/5 of the state of Alaska. The area is bigger than 47 of the other 49 states, with only California and Texas being bigger. Its population density, at 0.0449 inhabitants per square mile (0.0173/km), is the lowest in the United States.

Adjacent boroughs and census areas

North Slope Borough, Alaska – north
Southeast Fairbanks Census Area, Alaska – southeast
Fairbanks North Star Borough, Alaska – southeast
Denali Borough, Alaska – southeast
Matanuska-Susitna Borough, Alaska – south
Bethel Census Area, Alaska – south
Kusilvak Census Area, Alaska – west
Nome Census Area, Alaska – west
Northwest Arctic Borough, Alaska – west
Yukon Territory, Canada – east

National protected areas

Arctic National Wildlife Refuge (part)
- Mollie Beattie Wilderness (part)
Gates of the Arctic National Park and Preserve (part)
- Gates of the Arctic Wilderness (part)
Innoko National Wildlife Refuge
- Innoko Wilderness
Kanuti National Wildlife Refuge
Koyukuk National Wildlife Refuge (part)
- Koyukuk Wilderness (part)
Noatak National Preserve
Nowitna National Wildlife Refuge
Selawik National Wildlife Refuge (part)
- Selawik Wilderness (part)
Steese National Conservation Area
White Mountains National Recreation Area
Yukon–Charley Rivers National Preserve (part)
Yukon Flats National Wildlife Refuge