ZIP codes in Alaska by county
Alaska has 245 ZIP codes in its 30 counties. 12 of them cross a county line. Yukon-Koyukuk Census Area has the most, 33.
By the All Map Tools Team
- ZIP codes
- 245
- With 1% or more of their land in the state
- Counties
- 30
- 1 with a page of their own below
- Cross a county line
- 12
- 1% or more of their land in another county
- Cross a state line
- 0
- All of them lie inside the state
- County with the most
- 33
- Yukon-Koyukuk Census Area
- Most populated ZIP
- 99654
- 44,647 people · Tanaina
ZIP codes per county in Alaska
- 1–2
- 3–7
- 8–12
- 13–33
Counties and their ZIP codes
Every ZIP code in Alaska, by county
A ZIP code that crosses a county line appears in each county it has 1% or more of its land in.
- Aleutians East Borough (5)
- 99553, 99571, 99583, 99612, 99661
- Aleutians West Census Area (7)
- 99546, 99547, 99591, 99638, 99660, 99685, 99692
- Anchorage Municipality (18)
- 99501, 99502, 99503, 99504, 99505, 99506, 99507, 99508, 99513, 99515, 99516, 99517, 99518, 99530, 99540, 99567, 99577, 99587
- Bethel Census Area (27)
- 99503, 99551, 99552, 99557, 99559, 99561, 99575, 99578, 99589, 99607, 99609, 99614, 99621, 99622, 99626, 99630, 99634, 99637, 99641, 99651, 99655, 99656, 99668, 99679, 99680, 99681, 99690
- Bristol Bay Borough (3)
- 99613, 99633, 99670
- Chugach Census Area (4)
- 99574, 99677, 99686, 99693
- Copper River Census Area (6)
- 99566, 99573, 99586, 99588, 99737, 99780
- Denali Borough (6)
- 99704, 99729, 99743, 99744, 99755, 99760
- Dillingham Census Area (7)
- 99555, 99569, 99576, 99580, 99628, 99636, 99678
- Fairbanks North Star Borough (11)
- 99701, 99702, 99703, 99705, 99707, 99709, 99712, 99714, 99725, 99760, 99775
- Haines Borough (2)
- 99827, 99850
- Hoonah-Angoon Census Area (7)
- 99820, 99825, 99826, 99827, 99829, 99832, 99841
- Juneau City and Borough (2)
- 99801, 99824
- Kenai Peninsula Borough (15)
- 99556, 99568, 99572, 99603, 99605, 99610, 99611, 99631, 99635, 99639, 99663, 99664, 99669, 99672, 99682
- Ketchikan Gateway Borough (1)
- 99901
- Kodiak Island Borough (6)
- 99550, 99608, 99615, 99624, 99643, 99644
- Kusilvak Census Area (12)
- 99554, 99563, 99581, 99585, 99604, 99620, 99632, 99650, 99657, 99658, 99662, 99666
- Lake and Peninsula Borough (14)
- 99548, 99549, 99564, 99565, 99579, 99606, 99613, 99625, 99640, 99647, 99648, 99649, 99653, 99695
- Matanuska-Susitna Borough (12)
- 99588, 99623, 99645, 99652, 99654, 99667, 99674, 99676, 99683, 99688, 99694, 99729
- Nome Census Area (14)
- 99659, 99671, 99684, 99739, 99742, 99753, 99762, 99769, 99771, 99772, 99778, 99783, 99784, 99785
- North Slope Borough (10)
- 99519, 99721, 99723, 99734, 99747, 99759, 99766, 99782, 99789, 99791
- Northwest Arctic Borough (11)
- 99727, 99736, 99749, 99750, 99751, 99752, 99761, 99763, 99770, 99773, 99786
- Petersburg Borough (1)
- 99833
- Prince of Wales-Hyder Census Area (12)
- 99830, 99833, 99836, 99901, 99918, 99919, 99921, 99922, 99923, 99925, 99926, 99927
- Sitka City and Borough (1)
- 99835
- Skagway Municipality (1)
- 99840
- Southeast Fairbanks Census Area (7)
- 99706, 99732, 99737, 99738, 99764, 99776, 99780
- Wrangell City and Borough (2)
- 99903, 99929
- Yakutat City and Borough (1)
- 99689
- Yukon-Koyukuk Census Area (33)
- 99558, 99590, 99602, 99627, 99665, 99675, 99691, 99701, 99720, 99722, 99724, 99726, 99730, 99733, 99738, 99740, 99741, 99745, 99746, 99748, 99754, 99756, 99757, 99758, 99760, 99765, 99767, 99768, 99774, 99777, 99781, 99788, 99790
Tools for Alaska
Sources
- U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
- U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
- U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
- U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.
How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.
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