Alaska ZIP Code Lookup & Directory
Mail delivery in Alaska doesn't work the way it does in most of the country. A package headed to downtown Anchorage might arrive the next day, while one addressed to a village in the Aleutian Islands could travel by plane, boat, or barge before it ever reaches a mailbox. Cities like Anchorage, Fairbanks, and Juneau anchor the state's postal system, but a huge share of Alaska's communities have no road access at all, which makes the ZIP code the single most important piece of information on any envelope or shipping label.
This directory helps residents, businesses, and shippers confirm the right ZIP code for any Alaska address, understand how boroughs and census areas replace the county system used elsewhere, and avoid the common mistakes that delay mail headed to the state's more remote regions. For a look at how a lower-48 state organizes its ZIP system by county instead, see the Alabama ZIP Code Directory.
About ZIP Codes in Alaska
Every Alaska ZIP code begins with the digit 9, using the prefixes 995 through 999, placing the state at the very end of the national ZIP code sequence. Codes run from around 99501 in Anchorage up to 99901 in Ketchikan, with the 995 prefix concentrated around Anchorage and the Matanuska-Susitna area, while 997 and 998 stretch across the vast interior near Fairbanks and the Yukon-Koyukuk region. Despite being the largest state by land area, Alaska has one of the smallest ZIP code counts in the country, simply because so much of the state is sparsely populated wilderness.
The Municipality of Anchorage carries more ZIP codes than anywhere else in the state, followed by the Kenai Peninsula Borough and the Fairbanks North Star Borough. Together these three regions account for the bulk of Alaska's ZIP codes, which lines up directly with where most of the population actually lives.
How ZIP Codes Work in Alaska
Alaska doesn't use counties. Instead, the state is divided into boroughs, which function similarly to counties elsewhere, and census areas, which cover the vast unorganized borough where no local borough government exists. USPS ZIP codes are assigned around these boroughs and census areas rather than county lines, so anyone used to looking up a "county" for an Alaska address should search by borough instead.
A single ZIP code in rural Alaska can cover an area larger than some entire states in the lower 48, especially in places like the North Slope Borough or the Yukon-Koyukuk Census Area. Many of these communities are accessible only by small aircraft, and USPS bypass mail a system unique to Alaska is used to move groceries, supplies, and packages into villages that have no road connection to the rest of the state.
Anchorage also has ZIP codes reserved for specific PO Box clusters and postal facilities, separate from residential delivery codes, which is common in the city's downtown and midtown business districts.
Browse ZIP Codes by City
Searching by city works well for Alaska's more established communities Anchorage, Fairbanks, Juneau, Wasilla, Sitka, and Ketchikan all return clear results tied to specific ZIP codes. For smaller villages, especially those in the Bethel, Nome, or Northwest Arctic census areas, it helps to search by the community name directly, since many of these places have only one ZIP code covering the entire settlement and its surrounding area.
Major Cities & ZIP Code Coverage
Anchorage, the state's largest city, uses ZIP codes mainly in the 995xx range. Downtown and midtown fall under 99501 and 99503, South Anchorage uses 99507 and 99516, and the eastern neighborhoods are covered by 99504. Anchorage alone accounts for close to a third of the state's total ZIP codes.
Fairbanks, the hub for the state's interior, uses 997xx codes and serves as the main distribution point for mail and freight headed further north, including communities along the Dalton Highway toward Prudhoe Bay.
Juneau, the state capital, sits in the southeast panhandle and is only reachable by air or water, since no road connects it to the rest of Alaska. Its ZIP codes fall in the 998xx range, and mail bound for Juneau moves almost entirely by plane or ferry.
Ketchikan, near the southern tip of the panhandle, uses ZIP code 99901 and serves as a key entry point for mail and cargo arriving by sea from Washington State.
Wasilla and the Matanuska-Susitna Borough have grown quickly as an Anchorage bedroom community, and their ZIP codes have expanded accordingly over the past two decades.
ZIP Codes by Borough
The Municipality of Anchorage and the Fairbanks North Star Borough carry the most ZIP codes in the state, matching their status as Alaska's two largest population centers. The Kenai Peninsula Borough, home to towns like Kenai, Soldotna, and Homer, also carries a substantial number of ZIP codes tied to its fishing and tourism economy.
At the other end of the spectrum, census areas like Yukon-Koyukuk, Lake and Peninsula, and Northwest Arctic may have only a handful of ZIP codes covering thousands of square miles, with each one serving a cluster of small, often Alaska Native villages.
Popular ZIP Codes
| ZIP Code | City | Borough / Census Area | Notes |
|---|---|---|---|
| 99501 | Anchorage | Municipality of Anchorage | Downtown business district |
| 99701 | Fairbanks | Fairbanks North Star | Interior Alaska hub city |
| 99801 | Juneau | Juneau Borough | State capital, no road access |
| 99901 | Ketchikan | Ketchikan Gateway | Southern panhandle port entry |
| 99669 | Soldotna | Kenai Peninsula | Fishing and tourism hub |
| 99654 | Wasilla | Matanuska-Susitna | Growing Anchorage suburb |
| 99835 | Sitka | Sitka Borough | Island community, ferry access |
| 99762 | Nome | Nome Census Area | Remote western Alaska community |
Mailing, Shipping & Address Verification
Address verification matters more in Alaska than almost anywhere else in the country, since a mistyped ZIP code can send a package to the wrong region entirely, with no easy road correction possible. Many Alaska Native villages have PO Box-only addressing, meaning street addresses either don't exist or aren't used for mail delivery everything routes through a community post office instead.
USPS bypass mail is the system that keeps rural Alaska supplied, moving bulk shipments of food and household goods on scheduled flights directly to village post offices, separate from standard parcel delivery. Anyone shipping to a village not connected by road should expect longer transit times and should always confirm the ZIP code against the exact community name, since similarly named places can exist in different regions of the state.
Business, Logistics & Delivery
Ted Stevens Anchorage International Airport is one of the busiest cargo airports in the world, serving as a refueling and transfer hub for international freight flights between Asia and North America. This makes Anchorage's ZIP codes disproportionately important for logistics compared to the city's actual population size.
The Port of Anchorage handles the bulk of consumer goods entering the state by sea, while the Port of Valdez serves as the terminus for the Trans-Alaska Pipeline, moving crude oil from the North Slope oil fields. The Alaska Railroad connects Seward and Anchorage to Fairbanks, supplementing road freight along the Parks Highway and Richardson Highway. Since Alaska has no interstate highway connection to the rest of the country, nearly all freight moves in by air, sea, or the Alaska Highway through Canada, which shapes how shipping companies plan delivery timelines into and out of the state.
Oil and gas operations around Prudhoe Bay, commercial fishing fleets based out of Kodiak and Dutch Harbor, and the tourism industry centered on Juneau and the Inside Passage all rely on precise ZIP-level routing to keep freight and mail moving through a state where road access simply isn't an option for most communities.
Quick Facts
| Category | Detail |
|---|---|
| ZIP Code Range | 99501–99901 |
| Boroughs / Census Areas | 29 |
| Largest City | Anchorage |
| State Capital | Juneau |
| Time Zone | Alaska Time (Hawaii-Aleutian Time in the far western Aleutians) |
| Area Code | 907 (statewide) |
Helpful Tips
Always confirm the exact community name before mailing to rural Alaska, since a ZIP code mistake in a state this large can add days to delivery rather than the hours it might cost elsewhere. When shipping to Juneau, Sitka, or other panhandle communities, remember that everything moves by plane or ferry, so building in extra transit time avoids missed deadlines. For villages without street addressing, always use the PO Box number exactly as provided rather than substituting a physical description of the location. Businesses shipping bulk goods into rural Alaska should look into USPS bypass mail options, since standard parcel rates and timelines don't apply the same way once a shipment leaves the road-connected part of the state.
Related Pages
- Alabama ZIP Code Directory
- Arizona ZIP Code Directory
- Arkansas ZIP Code Directory
- California ZIP Code Directory
- Browse All US States
- ZIP Code Lookup Tool
- ZIP Code Distance Calculator
FAQ
How many ZIP codes does Alaska have?
Alaska has a relatively small number of ZIP codes for its size, concentrated around Anchorage, Fairbanks, and the Kenai Peninsula, with many rural codes covering enormous, sparsely populated areas.
What ZIP code range does Alaska use?
Alaska ZIP codes run from around 99501 in Anchorage to 99901 in Ketchikan, using the prefixes 995 through 999.
Does Alaska use counties like other states?
No, Alaska uses boroughs and census areas instead of counties, and ZIP codes are organized around these divisions rather than traditional county lines.
Which borough has the most ZIP codes?
The Municipality of Anchorage has more ZIP codes than any other borough or census area in the state.
Why does Juneau have no road-based ZIP delivery?
Juneau isn't connected to the rest of Alaska or Canada by road, so all mail and freight arrive by airplane or ferry rather than truck.
What is bypass mail in Alaska?
Bypass mail is a USPS system unique to Alaska that flies bulk shipments of food and household goods directly to rural village post offices that have no road access.
Do all Alaska villages have street addresses?
No, many remote villages rely entirely on PO Box addressing rather than street addresses, since USPS delivery routes through a single community post office.
What area code covers Alaska ZIP codes?
Alaska uses a single area code, 907, for the entire state.
Is Alaska in one time zone?
Most of the state uses Alaska Time, though the far western Aleutian Islands fall under Hawaii-Aleutian Time.
Why do some Alaska ZIP codes cover such large areas?
Low population density across the interior and western parts of the state means a single ZIP code can stretch across thousands of square miles with only a few small communities inside it.
How do I find the correct ZIP code for a small Alaska village?
Search by the exact community name rather than the nearest larger town, since many villages carry their own unique ZIP code despite having small populations.
Which Alaska airport handles the most cargo traffic?
Ted Stevens Anchorage International Airport is one of the busiest cargo airports in the world and serves as the state's main freight hub.
Conclusion
Alaska's ZIP code system reflects a state where geography dictates almost everything about how mail and freight move. Dense coverage around Anchorage, Fairbanks, and the Kenai Peninsula gives way to enormous, sparsely populated ZIP zones once the road system runs out. Search by city or ZIP code above to confirm the right postal information for any address in Alaska, from downtown Anchorage to the most remote village post office.