The 2020 COVID-19 Pandemic had a significant impact on migration flows in the Russian territory. The factors attracting the population to megacities have reduced their impact, giving rise to centrifugal forces which in turn has led to an increase in atypical migration processes, primarily to a massive outflow of citizens to out-of-town spaces. This process can be termed “crisis deurbanization”. The article examines the features of the current Russian Pandemic deurbanization, taking place in the specific Russian conditions of incomplete urbanization and, at the same time, the beginning of a posturbanization stage. In March-April-May 2020 the migration for short, medium and long distances to country homes in Moscow, Vladimir, Kostroma, Vologda and Nizhny Novgorod regions had reached its climax. The so-called “second homes” of the townspeople from now on fully began to combine recreational, “quarantine-sanitary” and work functions, which allows them to be used for long-term residence also after the end of the crisis. This clearly indicates prospects for formation in the future of settlement clusters of immigrants from megacities.