However, they continued to hunt and fish actively around the island over the years, until World War II broke out.

Adak Army installations allowed U.S. and Canadian forces to mount a successful offensive against the Japanese-held islands of Kiska and Attu.

The Aleut Corporation purchased Adak's facilities under a land transfer agreement with the Department of the Interior and the U.S. Navy/Department of Defense.

About 30 families with children relocated to Adak in September 1998, most of them Aleut Corp. shareholders, and the former high school was reopened at that time as a K–12 institution.

Since World War II, the U.S. Navy and Coast Guard developed facilities and recreation opportunities at Adak.

At its peak, Adak had a college, a McDonald's restaurant, a Baskin-Robbins ice cream stand, movie theater, roller skating rink, swimming pool, ski lodge, bowling alleys, skeet range, auto hobby shop, photo lab, and racquetball & tennis courts.

Adak is the southernmost community in Alaska and on the same latitude as Haida Gwaii in Canada, and London, England.

It is less than three degrees of latitude north of the 49th parallel, which forms the western part of the land border between the Contiguous United States and Canada.

Adak has a subpolar oceanic climate (Cfc), characterized by persistently overcast skies, moderate temperatures, high winds, significant precipitation, and frequent cyclonic storms.

With 263 rainy days per year, Adak has the second highest number of any inhabited locality in the United States after Hilo, Hawaii.

The U.S. Navy retains part of the north end of Adak Island (Parcel 4) and does annual sweeps of the Andrew Lake Seawall for unexploded ordnance.

Their website lists the Institutional Controls in place for all of Adak as part of the land exchange or Interim Conveyance.

The Navy provides the trail maps as part of the ordnance awareness information required to be shown to all Adak residents and visitors.

Four local residents hold commercial fishing permits, primarily for groundfish; however, commercial fishing vessels based out of Seattle and other parts of Alaska provide most of the work for the seafood plant by regularly offloading their catch at the facility's large dock.

The local airport allows the company to send orders via air cargo from Adak to markets around the world, including entire planes full of live king crab to China.

The site was used to dispose of sanitary trash, metal debris, batteries, solvents, waste paints, and construction rubble.

Due to its remoteness the internet connection has historically been very poor, and applications that require high bandwidth could not work as intended.

However, since late 2022 and 2023, Starlink has provided further internet access to many residents across rural Alaska, including to those in Adak.

[28][29] There is no hospital; however there is Adak Community Health Center, managed by Eastern Aleutian Tribes, Inc. (EAT).

The city has requested funds to greatly expand the Sweeper Cove small boat harbor, including new breakwaters, a 315-foot (96 m) dock and new moorage floats [attribution needed].

There are approximately 16 miles (26 km) of paved and primitive roads on Adak, all privately owned by the Aleut Corporation.

The Aleut are also seeking to develop their water system, which has been well-maintained and -designed for a larger Naval population, as an export industry.

[30] Because of its naval aviation past, Adak has an unusually large and sophisticated airport for the Aleutian Islands.