# List of boroughs and census areas in Alaska

The U.S. state of Alaska is divided into 19 organized boroughs and 11 census areas in the unorganized borough. Alaska, and the states of Connecticut and Louisiana are the only states that do not call their first-order administrative subdivisions counties (Connecticut uses councils of government and Louisiana uses parishes instead). Delegates to the Alaska Constitutional Convention wanted to avoid the traditional county system and adopted their own unique model with different classes of boroughs varying in powers and duties.
Many of the most densely populated regions of the state are part of Alaska's boroughs, which function similarly to counties in other states. There are four different classifications of organized boroughs: "Unified Home Rule" or "Non-unified Home Rule" (may exercise all legislative powers not prohibited by law or charter); "First Class" (may exercise any power not prohibited by law on a non-area wide basis by adopting ordinances); and "Second Class" (must gain voter approval for authority to exercise many non-area wide powers).
However, unlike county-equivalents in the other 49 states, the organized boroughs do not cover the entire land area of the state. The area not part of any organized borough is referred to as the Unorganized Borough. The U.S. Census Bureau, in cooperation with the state, divides the Unorganized Borough into 11 census areas, each roughly corresponding to an election district, thus totaling 30 county equivalents. However, these areas exist solely for the purposes of statistical analysis and presentation; they have no government of their own. Boroughs and census areas are both treated as county-level equivalents by the Census Bureau.
Some areas in the Unorganized Borough receive limited public services directly from the Alaska state government, usually law enforcement from the Alaska State Troopers and educational funding.
Seven consolidated city-borough governments exist—Juneau City and Borough, Skagway Municipality, Sitka City and Borough, Yakutat City and Borough, Wrangell City and Borough, Haines Borough, as well as the state's largest city, Anchorage. Though its legal name is the Municipality of Anchorage, it is considered a consolidated city-borough under state law.
The Federal Information Processing Standard (FIPS) 55-2,3,4 codes, which are used by the United States Census Bureau to uniquely identify states and counties, is provided with each entry. Alaska's code is 02, so each code is of the format 02XXX. The FIPS code for each county equivalent links to census data for that county equivalent. There are 30 divisions in Alaska.

## List of boroughs

| Borough | FIPS code | Borough seat | Class | Est. | Origin | Etymology | Density | Population | Area |
| Aleutians East Borough | 013 | Sand Point | Second | 1987 | - | Its location in the east Aleutian Islands, which are themselves of uncertain linguistic origin; possibly derived from Chukchi word aliat ("island") | 0.52 | 3,632 | 6,985 sq mi (18,091 km$^2$) |
| Anchorage | 020 | (Consolidated city-borough) | Unified Home Rule | 1964/1975 | Anchorage Borough formed in 1964, merged with city in 1975 to form unified city-borough | Derived from the presence of a safe place to anchor and unload supplies for construction of the Alaska Railroad c. 1913, thereby creating a community. | 169.65 | 289,600 | 1,707 sq mi (4,421 km$^2$) |
| Bristol Bay Borough | 060 | Naknek | Second | 1962 | - | Named in 1778 by Capt. James Cook for George Digby, 2nd Earl of Bristol. | 1.83 | 884 | 482 sq mi (1,248 km$^2$) |
| Denali Borough | 068 | Healy | Home Rule | 1990 | - | From Denali, the tallest North American mountain, which means "great one" in the Dena'ina language | 0.13 | 1,621 | 12,641 sq mi (32,740 km$^2$) |
| Fairbanks North Star Borough | 090 | Fairbanks | Second | 1964 | - | Named for its borough seat of Fairbanks, named in turn for Charles Fairbanks (1852–1918), U.S. Senator from Indiana and vice president under Theodore Roosevelt, and for Polaris, the North Star | 12.94 | 94,951 | 7,335 sq mi (18,998 km$^2$) |
| Haines Borough | 100 | (Consolidated city-borough) | Home Rule | 1968 (Consolidated 2002) | - | After Haines, which was itself named for Mrs. Francina E. Haines (1819–1870), the key fundraiser for the construction of a Presbyterian mission in the town. | 0.90 | 2,104 | 2,343 sq mi (6,068 km$^2$) |
| Juneau | 110 | (Consolidated city-borough) | Unified Home Rule | 1970 | The cities of Juneau and Douglas merged with the surrounding borough to form the municipality | Joseph "Joe" Juneau (1836-1899), prospector and co-founder of the city. | 11.68 | 31,572 | 2,704 sq mi (7,003 km$^2$) |
| Kenai Peninsula Borough | 122 | Soldotna | Second | 1964 | - | The Kenai Peninsula, whose name may be derived from Kenayskaya, the Russian name for Cook Inlet. | 3.82 | 61,259 | 16,017 sq mi (41,484 km$^2$) |
| Ketchikan Gateway Borough | 130 | Ketchikan | Second | 1963 | - | The borough seat of Ketchikan and the borough's gateway location on the Alaska-Canada border. | 2.82 | 13,677 | 4,857 sq mi (12,580 km$^2$) |
| Kodiak Island Borough | 150 | Kodiak | Second | 1963 | - | Named after Kodiak Island, which may itself be named for the Koniag people | 1.88 | 12,654 | 6,689 sq mi (17,324 km$^2$) |
| Lake and Peninsula Borough | 164 | King Salmon | Home Rule | 1989 | - | The borough's many large lakes, and the Alaska Peninsula | 0.06 | 1,315 | 23,832 sq mi (61,725 km$^2$) |
| Matanuska-Susitna Borough | 170 | Palmer | Second | 1964 | - | Named for the valley that the Matanuska and Susitna Rivers form. | 4.76 | 117,613 | 24,707 sq mi (63,991 km$^2$) |
| North Slope Borough | 185 | Utqiaġvik | Home Rule | 1972 | - | The Alaska North Slope along the Brooks Range. | 0.12 | 10,663 | 88,824 sq mi (230,053 km$^2$) |
| Northwest Arctic Borough | 188 | Kotzebue | Home Rule | 1986 | In 1986, residents of Kotzebue and 10 other area villages voted to form the Northwest Arctic Borough (with boundaries coincident with those of NANA), to be economically based on taxing the Red Dog mine, then under development. | Its geographic location and position above the Arctic Circle. | 0.20 | 7,134 | 35,663 sq mi (92,367 km$^2$) |
| Petersburg Borough | 195 | Petersburg | Home Rule | 2013 | Incorporated after voters approved borough formation in December 2012. | Named for Norwegian immigrant Peter Buschmann (1849-1903), founder of the former city of Petersburg. | 1.18 | 3,436 | 2,901 sq mi (7,514 km$^2$) |
| Sitka | 220 | (Consolidated city-borough) | Unified Home Rule | 1971 | - | Derived from Tlingit word Shee At'iká, meaning "People on the outside of Shee (Baranof Island)." | 2.91 | 8,355 | 2,870 sq mi (7,433 km$^2$) |
| Skagway | 230 | (Consolidated city-borough) | First | 2007 | - | Derived from Tlingit word Shgagwèi, meaning "a windy place with white caps on the water." | 2.58 | 1,119 | 434 sq mi (1,124 km$^2$) |
| Unorganized Borough | - | - | - | 1961 | The Borough Act of 1961 created The Unorganized Borough including all of Alaska not within a Unified, Home rule, First class or Second class borough. | A legal entity in Alaska, covering those parts of Alaska not within an incorporated borough; it is directly administered by the State of Alaska. | 0.24 | 75,790 | 319,852 sq mi (828,413 km$^2$) |
| Wrangell | 275 | (Consolidated city-borough) | Unified Home Rule | 2008 | Formerly part of Wrangell-Petersburg Census Area | Ferdinand von Wrangel, Russian administrator of Alaska, 1840-49. | 0.81 | 2,064 | 2,556 sq mi (6,620 km$^2$) |
| Yakutat | 282 | (Consolidated city-borough) | Home Rule | 1992 | - | Yakutat Bay and the Yakutat Alaska Native people | 0.09 | 690 | 7,623 sq mi (19,743 km$^2$) |

## Census areas in the Unorganized Borough

The Unorganized Borough is the portion of the U.S. state of Alaska not contained in any of its 19 organized boroughs. While referred to as the "Unorganized Borough", it is not a borough itself. It encompasses over half of Alaska's area, 970,500 km$^2$. If the unorganized Borough were a state in itself, it would be the largest state in the United States of America, larger than the rest of Alaska and larger than Texas or California. (374,712 mi$^2$). As of the 2024 Census estimate, 10% of Alaskans (75,790 people) reside in it.
Currently unique among the United States, Alaska is not entirely subdivided into organized county equivalents. For the 1980 census, the United States Census Bureau divided the unorganized borough into 12 census areas to facilitate census taking in the vast unorganized area. As new boroughs incorporate, these areas have been altered or eliminated to accommodate, such that there are currently 11 census areas:
| Census area | FIPS code | Largest town (as of 2000) | Etymology | Density | Population | Area |
| Aleutians West Census Area | 016 | Unalaska | Location in the western Aleutian Islands. | 1.23 | 5,424 | 4,393 sq mi (11,378 km$^2$) |
| Bethel Census Area | 050 | Bethel | City of Bethel, the largest settlement in the census area, which is itself named for the Biblical term Bethel ("house of God"). | 0.45 | 18,237 | 40,627 sq mi (105,223 km$^2$) |
| Chugach Census Area | 063 | Valdez | The Chugach people (Part of Valdez–Cordova Census Area prior to January 02, 2019) | 0.69 | 6,604 | 9,530 sq mi (24,683 km$^2$) |
| Copper River Census Area | 066 | Glennallen | The Copper River (Part of Valdez–Cordova Census Area prior to January 02, 2019) | 0.11 | 2,631 | 24,692 sq mi (63,952 km$^2$) |
| Dillingham Census Area | 070 | Dillingham | The city of Dillingham, the largest settlement in the area, which was itself named after United States Senator Paul Dillingham (1843–1923), who had toured Alaska extensively with his Senate subcommittee in 1903. | 0.25 | 4,642 | 18,334 sq mi (47,485 km$^2$) |
| Hoonah–Angoon Census Area | 105 | Hoonah | The cities of Hoonah and Angoon | 0.35 | 2,312 | 6,555 sq mi (16,977 km$^2$) |
| Kusilvak Census Area | 158 | Hooper Bay | Kusilvak Mountains (Known as Wade Hampton prior to 2015) | 0.47 | 7,946 | 17,077 sq mi (44,229 km$^2$) |
| Nome Census Area | 180 | Nome | City of Nome, the largest settlement in the census area. | 0.43 | 9,836 | 22,969 sq mi (59,489 km$^2$) |
| Prince of Wales-Hyder Census Area | 198 | Craig | Prince of Wales Island and the town of Hyder (Known as Prince of Wales-Outer Ketchikan prior to the expansion of Ketchikan Gateway Borough in 2008) | 1.09 | 5,746 | 5,268 sq mi (13,644 km$^2$) |
| Southeast Fairbanks Census Area | 240 | Deltana | Its location, southeast of Fairbanks | 0.29 | 7,313 | 24,831 sq mi (64,312 km$^2$) |
| Yukon-Koyukuk Census Area | 290 | Fort Yukon | Yukon River ("great river" in Gwich’in), which flows through the census area; and the city of Koyukuk | 0.04 | 5,099 | 145,576 sq mi (377,040 km$^2$) |