Ghettos just before and during World War II were used by Nazi Germany as a system of forced segregation, control, exploitation, and gradual destruction of Jewish communities (and some Romani people) in occupied Europe. They were key transitional spaces in the broader plan that moved from discrimination and expulsion to mass murder and deportation to killing centers.

What “ghetto” meant under Nazi rule

Under Nazi occupation, a ghetto was a designated district in a town or city where Jews were forced to live, cut off from the non‑Jewish population and often from other Jewish communities. Most were established in German‑occupied Poland and the territories taken from the Soviet Union after 1941.

  • Jews could not choose to live there; they were ordered or driven in by German authorities and local collaborators.
  • Entry and exit were usually strictly controlled by guards, walls, or barbed wire, with escape attempts punishable by beatings or death.
  • The ghettos were meant to be temporary tools of policy, not permanent neighborhoods; the Nazi leadership never intended long‑term survival of the people inside them.

How ghettos were used just before WWII and in the early phase

Before the full outbreak of WWII in September 1939, Nazi policy against Jews focused mainly on social exclusion, legal discrimination, and forced emigration inside Germany, rather than large walled ghettos as later seen in occupied Poland. The idea of sealed Jewish districts hardened around 1938–1939 as the regime radicalized and prepared for war.

  • After the invasion of Poland in September 1939, German security chief Reinhard Heydrich ordered that Jews be “concentrated” into separate parts of cities, explicitly calling for segregation for “police security” while exploiting their labor.
  • The first World War II ghetto was created in PiotrkĂłw Trybunalski in German‑occupied Poland in October 1939, only weeks after the invasion, marking the shift from scattered persecution to systematic ghettoization in conquered territories.
  • Early ghettos functioned as holding zones where local Jewish populations were forced into cramped urban quarters while Nazi authorities worked out broader plans for deportation, forced labor, and eventual murder.

Types of ghettos and how they functioned

Historians usually describe three main types of ghettos used during WWII: closed (sealed), open, and “destruction” ghettos.

  • Closed/sealed ghettos
    • Surrounded by brick walls, fences, or barbed wire, often with guarded gates.
* Jews were banned from living anywhere else; leaving without authorization could lead to immediate execution.

* Overcrowding, starvation, disease (like typhus), and lack of heating or sanitation created extremely high death rates even before mass deportations began.
  • Open ghettos
    • No walls in some cases, but Jews were still restricted to particular districts and subject to curfews and movement controls.
* Often found in smaller towns in occupied Poland, the Soviet territories, and areas controlled by allied regimes such as Romania’s occupation zone in Transnistria.
  • Destruction (or “transit”) ghettos
    • Short‑lived, tightly sealed ghettos created for just a few weeks before the inhabitants were deported to killing centers or murdered on the spot.
* Common in parts of occupied Soviet territory (e.g., Lithuania and Ukraine) and in later stages in Hungary, where ghettoization and liquidation were carried out very quickly in 1944.

In every type, the ghetto served to isolate, control, strip people of property and rights, and make later mass murder logistically easier.

Everyday life and Nazi goals inside the ghettos

Ghettos were designed to break people physically and psychologically while still extracting labor and property.

  • Living conditions
    • Extreme overcrowding: in the Warsaw Ghetto, over 400,000 Jews were crammed into about 1.3 square miles (3.4 square kilometers).
* Severe food rationing guaranteed chronic hunger; official rations were often far below survival levels, pushing people into smuggling and black markets.

* Diseases like typhus and dysentery spread quickly due to unsanitary, unheated, and poorly serviced buildings.
  • Administration and control
    • Germans ruled from above but imposed local Jewish Councils (JudenrĂ€te) to carry out orders such as distributing rations, organizing labor, and compiling lists for deportation, placing Jews in impossible moral dilemmas under terror.
* Forced labor workshops and factories were set up in or near the ghettos so that residents could be exploited for war production under threat of violence, while still being starved and kept in degrading conditions.
  • Human responses
    • Despite brutal conditions, people tried to preserve cultural, religious, and family life: clandestine schools, religious services, theater, and underground education all operated in some ghettos.
* Diaries, poems, and underground archives (such as those in Warsaw and ƁódĆș) documented daily life, hunger, fear, and also acts of solidarity and resistance.

Ghettos during the “Final Solution”

As Nazi policy escalated from persecution to genocide, ghettos became staging grounds for mass deportation and killing.

  • From around 1941–1942, with the decision for the “Final Solution,” many ghettos were systematically “liquidated”: residents were deported to extermination camps like Treblinka, Sobibor, Belzec, and Auschwitz‑Birkenau, or shot in nearby forests and ravines.
  • Some ghettos, such as Warsaw and ƁódĆș, existed for several years; others were set up and destroyed within weeks as German killing operations accelerated, especially in the occupied Soviet Union and in Hungary in 1944.
  • Armed resistance emerged in several ghettos, most famously the Warsaw Ghetto Uprising of 1943, when Jewish fighters held off German forces for weeks rather than be passively sent to death camps.

By the time the war was winding down, almost all ghettos had been emptied through mass murder, deportation, or death from starvation and disease; very few residents survived.

TL;DR: Ghettos just before and during WWII were not normal neighborhoods but instruments of Nazi persecution and genocide: spaces where Jews were forcibly concentrated, isolated, starved, exploited for labor, and then deported or killed as part of the plan to destroy European Jewry.

Information gathered from public forums or data available on the internet and portrayed here.