Some islands empty slowly. Others are cleared out in a matter of days.
Across the mid-20th century, governments, wars, volcanoes and changing economies pushed entire island communities off their homes. In many of these places, the people who left expected to return. In most cases, they never did.
Hashima Island, Japan
Hashima, better known as Gunkanjima or Battleship Island, sits off Nagasaki and became one of Japan’s most densely populated places during its coal boom. Mitsubishi developed the island in the late 19th century, and by 1959 more than 5,200 people lived on just 16 acres. Apartment blocks, schools, a hospital and shops made it a self-contained industrial town in the East China Sea.
Its wartime history is darker. Historians and Japanese records show Korean laborers and Chinese prisoners were forced to work there during World War II under brutal conditions. That legacy still shapes how the island is discussed today, especially in South Korea and among labor historians.
Hashima’s final collapse came after Japan shifted from coal to petroleum in the 1960s. As undersea coal mining became uneconomical, Mitsubishi shut the mine in January 1974. Residents left almost immediately, and the concrete city was suddenly silent.
Nobody returned to live there because the reason for the town’s existence was gone. The buildings also deteriorated rapidly under salt, wind and typhoons, making habitation unsafe. Today it survives as an uninhabited heritage site and a symbol of both industrial ambition and exploitation.
Hirta, St Kilda, Scotland
Hirta is the main island in the St Kilda archipelago, far west of mainland Scotland. For centuries, its isolated community lived by seabird harvesting, sheep raising and seasonal trade. By the early 20th century, however, population loss and modern economic change had weakened daily life on the island.
The final evacuation came in 1930, which places it just before mid-century, but its abandonment story belongs to the same era of disappearing island settlements. After repeated crop failures, disease and the strain of isolation, the remaining 36 residents petitioned the government for removal. Officials agreed, and they were taken to the Scottish mainland in August 1930.
Once the community left, there was no practical route back to permanent life. Hirta had no reliable economy large enough to support a return, and its remoteness made public services difficult and expensive. Harsh Atlantic weather only reinforced that reality.
The island later became important for conservation and military use, with a radar base established in the wider archipelago during the Cold War. That gave St Kilda a new strategic and environmental role, but not a civilian future. What remained were stone houses, cleits and a powerful image of the end of remote subsistence living.
Bikini Atoll, Marshall Islands
Bikini Atoll was home to a Marshallese community for generations before the United States selected it for nuclear testing after World War II. In 1946, U.S. officials relocated the islanders so Operation Crossroads could begin. The tests that followed, and later detonations in the Marshall Islands, transformed Bikini into one of the clearest examples of a place people were told to leave temporarily and then could not reclaim.
The Bikinians were moved first to Rongerik Atoll, where food shortages quickly became severe. Later relocations followed, and many families ended up on Kili Island and elsewhere. U.S. officials eventually acknowledged that the original displacement had been handled disastrously.
The main reason nobody returned for lasting resettlement was radioactive contamination. While some cleanup and limited resettlement efforts were attempted in the 1970s, radiation in locally grown food, especially coconut and breadfruit, remained a major concern. By 1978, resettled families were evacuated again after monitoring found unsafe exposure levels.
Bikini remains inhabited only in a limited technical or visit-based sense, not as a restored community. It matters in U.S. history because the displacement was carried out by American authorities, and compensation disputes have continued for decades. The atoll’s name became globally famous, but its original residents paid the price.
Tristan da Cunha, South Atlantic
Tristan da Cunha is one of the most remote inhabited archipelagos in the world, lying in the South Atlantic between southern Africa and South America. In October 1961, the volcanic island’s main settlement, Edinburgh of the Seven Seas, was threatened after an eruption began nearby. Cracks opened, ash fell and residents were evacuated first to Nightingale Island and then to Cape Town.
From there, the islanders were transported to the United Kingdom. British authorities initially expected that the evacuation might become permanent. News coverage at the time treated the tiny community almost as a curiosity, but for the residents it was the loss of home, work and identity.
What makes Tristan unusual is that some people did return. After scientific surveys judged the settlement area usable, most islanders went back in 1963. Still, many families who had left mid-century never fully resumed the old way of life, and the eruption permanently altered the island’s history.
In practical terms, the island remained vulnerable because of its remoteness and limited economy. Return was possible only because the community chose it collectively and conditions allowed it. Tristan belongs on this list because it shows how rare a successful return actually was compared with most mid-century evacuations.
Iwo Jima, Japan
Iwo Jima, now officially called Ioto, was a small civilian island before it became one of World War II’s most famous battlefields. Japanese civilians were evacuated before the 1945 battle, when U.S. and Japanese forces fought for control of the island in one of the Pacific war’s bloodiest campaigns. After the battle, the island’s role changed completely.
The United States controlled Iwo Jima until it was returned to Japan in 1968, but it did not reopen as a normal civilian settlement. Instead, it remained a military site with heavy restrictions. The wartime destruction had erased homes, farming and basic local life.
Former residents and descendants have maintained ties to the island, especially through memorial visits. But permanent repopulation never happened because the island’s strategic value outweighed any effort to rebuild a civilian town. Access has stayed tightly controlled.
For Americans, Iwo Jima is often remembered through the flag-raising image and Marine Corps history. Less discussed is the fact that it was also a home that ordinary people lost. Mid-century war turned it into sacred ground and military infrastructure, not a place families could simply move back to.
Aogashima, Japan
Aogashima is a volcanic island south of Tokyo that was dramatically emptied in the late 18th century, then resettled. Its more relevant mid-century story is how modern volcanic monitoring changed the meaning of island life. Although not permanently abandoned in the 1940s or 1950s, it became part of Japanese disaster planning discussions because small volcanic islands could be lost to sudden evacuation.
The stronger mid-century example in the Izu chain is actually Torishima, known for repeated evacuations tied to volcanic danger. But Aogashima helps explain why some island communities did not fully return after major eruptions elsewhere in Japan. Once governments judged a place too risky or too economically weak, rebuilding often stalled.
Aogashima today is inhabited, which makes it an outlier rather than a true no-return case. Still, historians of Japanese islands often use these volcanic communities to show how memory of disaster can discourage large-scale resettlement even when formal bans end. A village can exist on paper yet fail to recover its former population.
That pattern matters because abandonment is not always legal or total. Sometimes people are technically allowed back, but jobs, services and fear keep numbers low. In the mid-20th century, many island communities reached that tipping point and never regained what they had lost.
Nagoro and Nearby Shikoku Hamlets, Japan
Nagoro is not an island on its own, but it reflects a broader mid-century and postwar pattern seen on small Japanese islands and isolated settlements. Across the Seto Inland Sea and other rural areas, depopulation accelerated after World War II as younger residents moved to cities for factory and office work. Fishing and farming villages that once seemed stable emptied within a generation.
On several minor islands, schools closed first, then ferries were cut back, then clinics and stores disappeared. Once that chain began, return became unlikely. Elderly residents often stayed until death, but younger families built lives in Osaka, Tokyo and other urban centers.
This was less a single dramatic evacuation than a structural abandonment. Government records and regional studies have shown that postwar economic growth concentrated opportunity in metropolitan Japan, leaving remote islands with shrinking tax bases and aging populations. In some places, there simply were not enough people left to sustain community life.
The reason nobody returned was straightforward. The old local economy no longer paid, and modern education and health care were easier to access on the mainland. Mid-century abandonment was not always caused by disaster. Just as often, it happened because prosperity elsewhere drained island life away.
Alicudi, Italy
Alicudi, one of Italy’s Aeolian Islands, was never wholly abandoned, but by the mid-20th century it had lost much of its population as emigration transformed southern Europe. Like many Mediterranean islands, it was hit by a combination of poverty, limited jobs and mass migration after World War II. Boats that once connected small island economies increasingly carried young people away.
In the 1950s and 1960s, residents left for Sicily, mainland Italy, Australia and the Americas. The island’s steep terrain, lack of roads and small agricultural base made modern life difficult. Essential services stayed thin, and the old village structure no longer held enough people to sustain itself in the same way.
Alicudi’s story mirrors dozens of smaller island communities where nobody truly returned in large numbers because migration became permanent. Families established themselves elsewhere, and remittances replaced local production. Houses were left seasonally occupied or empty altogether.
Today, Alicudi still has residents, but its mid-century population collapse remains central to its identity. It belongs in this conversation because abandonment can be partial and still irreversible. Once children stop being raised in a place, a community’s long-term future usually goes with them.
Calaque, Alaska island communities
In Alaska, the better-known mid-century island abandonment story is not a single island but a pattern among Native villages relocated after environmental damage, school centralization and changing federal policy. Several small island or coastal communities in the Aleutians and Bering Sea region were emptied during and after World War II. Attu Island stands out most clearly.
Attu, at the western end of the Aleutian chain, was invaded by Japanese forces in 1942. Its Unangan residents were taken to Japan as prisoners, while other Aleut communities were evacuated by the U.S. government to internment camps in Southeast Alaska under harsh conditions. After the war, Attu villagers were not allowed to resettle their home island.
Officials determined the village was too remote and costly to rebuild. Survivors were instead resettled elsewhere, and the community as a living place effectively ended. Over time, only military and later limited federal personnel remained on Attu.
This history matters because it shows how strategic decisions can erase a home map. Nobody returned not because residents lacked attachment, but because the state decided repopulation was impractical. In U.S. terms, it is one of the starkest examples of wartime displacement becoming permanent abandonment.
Plymouth area, Montserrat
Montserrat is not abandoned as a whole, but its former capital, Plymouth, became a modern ghost city after the Soufriere Hills volcano erupted in 1995. The decisive mid-century comparison lies in how governments respond once an island’s key settlement is declared unsafe. While this happened after the mid-20th century, it closely echoes older island evacuations.
Ash flows and volcanic activity buried much of Plymouth, and exclusion zones kept residents out. Two-thirds of the population left Montserrat during the crisis years, many heading to the United Kingdom, Antigua and elsewhere. The south of the island effectively stopped functioning as a civilian center.
People did not return to Plymouth because they legally could not and because the physical risk remained too high. Infrastructure, homes and businesses were destroyed or entombed. Even where memory remained strong, the city could not simply reopen.
For a general audience, Montserrat helps make the historical pattern easy to understand. Once housing, government offices and schools relocate, return becomes much harder than outsiders assume. Communities are not rebuilt by sentiment alone. They need safety, insurance, transport and jobs, and many abandoned islands lose all four at once.
Gunkanjima’s global parallels in China and Taiwan
Across East Asia, several smaller mining and military islands followed versions of Hashima’s fate in the 1950s and 1960s. Some Chinese and Taiwanese islands lost civilian populations after strategic militarization, while others emptied as mines closed or fisheries declined. Their names are less globally recognized, but the pattern is familiar.
Industrial islands are especially vulnerable because they often depend on one employer and one transport route. When the mine shuts, the dock falls quiet, supply chains stop and families leave quickly. If the island also has military restrictions, private redevelopment becomes even less likely.
Researchers in regional economic history have long noted that these places rarely attract return migration. Former residents may come back for festivals, graves or photography, but not for careers or schools. The social fabric breaks once a generation is educated elsewhere.
That is why so many mid-century island departures became permanent. The problem was not only the event that triggered the move. It was the absence of any realistic second economy after the first one vanished. Without that, an island becomes memory, not hometown.
Poveglia, Italy
Poveglia, in the Venetian Lagoon, had earlier uses as a quarantine station and asylum site, but by the mid-20th century it had effectively ceased to function as a normal inhabited place. The psychiatric hospital closed in 1968, ending its last major institutional role. After that, the island sat largely unused.
Unlike islands emptied by war or volcanoes, Poveglia’s abandonment came from institutional withdrawal. Once the hospital shut, there was no resident civilian base to replace it. The island’s buildings decayed, and legal uncertainty over redevelopment slowed any durable reuse.
Popular culture later turned Poveglia into a so-called haunted island, but the real story is simpler and more revealing. It lost its function. Many abandoned islands do. When an island exists mainly to serve a prison, mine, hospital or military post, closure can mean instant emptiness.
Nobody returned because there was nothing to return to. That may be the clearest lesson running through all 12 cases. Whether the trigger was radiation, invasion, eruption or economic collapse, the final barrier was usually the same. Home disappeared as a working system, not just as a location.
