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West county atlas

Alaska county map

Explore all 30 boroughs and census areas. Select a county to see its map, or download a copy for your next project.

2025 Census boundaries30 mapped unitsCapital: Juneau
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Boundary map 100%
Labelled map of Alaska boroughs and census areas Aleutians East BoroughAleutians West Census AreaAnchorage MunicipalityBethel Census AreaBristol Bay BoroughChugach Census AreaCopper River Census AreaDenali BoroughDillingham Census AreaFairbanks North Star BoroughHaines BoroughHoonah-Angoon Census AreaJuneau City and BoroughKenai Peninsula BoroughKetchikan Gateway BoroughKodiak Island BoroughKusilvak Census AreaLake and Peninsula BoroughMatanuska-Susitna BoroughNome Census AreaNorth Slope BoroughNorthwest Arctic BoroughPetersburg BoroughPrince of Wales-Hyder Census AreaSitka City and BoroughSkagway MunicipalitySoutheast Fairbanks Census AreaWrangell City and BoroughYakutat City and BoroughYukon-Koyukuk Census Area
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2025 U.S. Census boundaries. Zoom to reveal more names. Drag to pan when zoomed; use arrow keys, + and − with the map focused.

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SVG

SVG is editable vector artwork. PNG is a high-resolution image. PDF uses landscape Letter pages, with a separate key when needed.

Downloads contain the complete boundary map, independent of zoom. Crowded names use a numbered key. Numbered quiz maps use the county list / answer key (CSV). Boundary data (GeoJSON) · Reuse with source credit.

Roads, terrain & aerial imagery

Explore Alaska with a county boundary overlay. Choose a view to load the interactive map.

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Street names, terrain, or aerial photography with the county boundary in view.

Backgrounds load from OpenStreetMap or USGS only when selected. Imagery dates and detail vary by location.

Map scope: Use the boundary map for names and shapes, or the interactive background viewer for roads, terrain, and aerial imagery. County boundaries do not identify parcels or ZIP codes.

Alaska county geography overview

Alaska has 30 boroughs and census areas, which places it 36th among the 50 state and District of Columbia maps in this atlas when ordered by number of county-level units. Their combined 571,390 square miles of land place the state 1st by mapped land area.

The average county-level area is 19,046 square miles, while the median is 7,482 square miles. The median is often the better description of a typical unit because one or two very large areas can pull the average upward. The five largest units together account for about 59% of the state’s mapped land area.

30county-level units
7,482 sq mimedian land area
145,767.5 sq milargest unit
14%share of mapped area that is water

Largest and smallest Alaska boroughs and census areas

Yukon-Koyukuk Census Area is the largest county-level unit by land area at 145,767.5 square miles. It represents about 26% of all mapped land in Alaska. At the other end of the range, Skagway Municipality has 442.9 square miles of land.

Largest by land area

  1. Yukon-Koyukuk Census Area145,767.5 sq mi
  2. North Slope Borough88,792.8 sq mi
  3. Bethel Census Area40,654.9 sq mi
  4. Northwest Arctic Borough35,671.7 sq mi
  5. Southeast Fairbanks Census Area24,839.2 sq mi

Smallest by land area

  1. Skagway Municipality442.9 sq mi
  2. Bristol Bay Borough481.4 sq mi
  3. Anchorage Municipality1,706.8 sq mi
  4. Haines Borough2,334.9 sq mi
  5. Wrangell City and Borough2,556.1 sq mi

Rankings use land area rather than total area. This avoids making coastal or lake counties appear larger solely because their boundaries include extensive water.

Alphabetical list of Alaska boroughs and census areas

The table is alphabetical, so it works as a name and FIPS-code reference rather than an area ranking. Every identifier begins with the Alaska state FIPS prefix 02. Land and water figures are rounded to one decimal place.

30 county-level areas

Download county data / numbered map key (CSV)
No.NameFIPS codeLand areaWater area
1Aleutians East Borough020136,985.4 sq mi8,030.8 sq mi
2Aleutians West Census Area020164,387.4 sq mi9,729.1 sq mi
3Anchorage Municipality020201,706.8 sq mi237.7 sq mi
4Bethel Census Area0205040,654.9 sq mi4,900.7 sq mi
5Bristol Bay Borough02060481.4 sq mi367.6 sq mi
6Chugach Census Area020639,574.3 sq mi5,613.5 sq mi
7Copper River Census Area0206624,647.4 sq mi470 sq mi
8Denali Borough0206812,639.7 sq mi26.8 sq mi
9Dillingham Census Area0207018,353.2 sq mi2,274.9 sq mi
10Fairbanks North Star Borough020907,335 sq mi99.9 sq mi
11Haines Borough021002,334.9 sq mi398.6 sq mi
12Hoonah-Angoon Census Area021056,559.7 sq mi3,025.7 sq mi
13Juneau City and Borough021102,702.9 sq mi555.1 sq mi
14Kenai Peninsula Borough0212216,017.6 sq mi8,703.5 sq mi
15Ketchikan Gateway Borough021304,857.1 sq mi1,820.5 sq mi
16Kodiak Island Borough021506,689.5 sq mi5,462.6 sq mi
17Kusilvak Census Area0215817,151.5 sq mi2,507.1 sq mi
18Lake and Peninsula Borough0216423,896.6 sq mi9,913.9 sq mi
19Matanuska-Susitna Borough0217024,707.1 sq mi560.5 sq mi
20Nome Census Area0218022,969.8 sq mi5,320.4 sq mi
21North Slope Borough0218588,792.8 sq mi6,035.1 sq mi
22Northwest Arctic Borough0218835,671.7 sq mi4,948.1 sq mi
23Petersburg Borough021952,900.9 sq mi926.6 sq mi
24Prince of Wales-Hyder Census Area021985,268.1 sq mi5,646.8 sq mi
25Sitka City and Borough022202,870.2 sq mi1,904.3 sq mi
26Skagway Municipality02230442.9 sq mi10.7 sq mi
27Southeast Fairbanks Census Area0224024,839.2 sq mi282.4 sq mi
28Wrangell City and Borough022752,556.1 sq mi915 sq mi
29Yakutat City and Borough022827,628.4 sq mi1,536.2 sq mi
30Yukon-Koyukuk Census Area02290145,767.5 sq mi2,110.7 sq mi

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, download a PDF from the controls above. Labelled exports use numbered callouts for crowded areas; numbered quiz maps match the alphabetical county list. SVG files keep the boundary lines sharp at larger paper sizes.

Frequently asked questions

How many boroughs and census areas are in Alaska?

Alaska has 30 boroughs and census areas in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this Alaska county map?

Yes. Choose Download / print and select PDF for a landscape Letter page, PNG for an image, or SVG for editable vector artwork. Because the map is SVG, its boundary lines stay sharp when scaled.

What is the largest county-level area in Alaska?

Yukon-Koyukuk Census Area is the largest by land area in this dataset at 145,767.5 square miles. This is an area ranking, not a population ranking.

What is the smallest county-level area in Alaska?

Skagway Municipality is the smallest by land area in this dataset at 442.9 square miles.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:5,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 27, 2026.