Alaska Counties by Land Area

Want to know about the largest to smallest counties in Alaska, USA in terms of total land area? Check this resource Alaska counties by land area to discover all the details regarding county map (boundary), and nearby counties. On the other hand, check Alaska counties by population to know more about county based demographic details.

What is the largest county in Alaska by land area?
Yukon-Koyukuk Census Area is the largest county in Alaska spanning 145581.86 square miles, with an additional 2296.28 square miles of water area. Following Yukon-Koyukuk Census Area, North Slope Borough ranks as the second largest in terms of land area, covering 88823.62 square miles, while Bethel Census Area secures the position as the third largest county in Alaska.

What is the smallest county by land area in Alaska?
Bristol Bay Borough is the smallest in Alaska by total land area, covers about 481.95 square miles.

What is the largest county by population in Alaska?
Anchorage Borough in Alaska, USA, stands as the most populous county having 291,247 residents as per the 2022 census data.

What is the smallest county by population in Alaska?
Yakutat Borough is the smallest in Alaska by total population, having 662 residents as per the 2022 census data.

Alaska Counties by Size

Rank	County in Alaska	Land Area square miles	Water Area square miles	Total Area square miles
1	Yukon-Koyukuk Census Area	145,582	2,296	147,878
2	North Slope Borough	88,824	6,004	94,828
3	Bethel Census Area	40,639	4,917	45,556
4	Northwest Arctic Borough	35,663	4,956	40,620
5	Southeast Fairbanks Census Area	24,832	289	25,122
6	Matanuska-Susitna Borough	24,707	558	25,266
7	Lake and Peninsula Borough	23,832	10,035	33,867
8	Nome Census Area	22,970	5,321	28,290
9	Dillingham Census Area	18,334	2,295	20,629
10	Kenai Peninsula Borough	16,018	8,703	24,721
11	Denali Borough	12,641	26	12,667
12	Yakutat Borough	7,625	1,539	9,164
13	Fairbanks North Star Borough	7,335	100	7,435
14	Aleutians East Borough	6,986	8,030	15,016
15	Kodiak Island Borough	6,689	5,462	12,152
16	Ketchikan Gateway Borough	4,857	1,796	6,653
17	Aleutians West Census Area	4,393	9,723	14,116
18	Sitka Borough	2,870	1,945	4,815
19	Juneau Borough	2,704	551	3,255
20	Haines Borough	2,344	402	2,746
21	Anchorage Borough	1,707	240	1,947
22	Bristol Bay Borough	482	367	849