People of all ages boarded trains and buses with the belongings they could carry and small children in their arms.
Russia's advances in Ukraine have stalled everywhere but in Pokrovsk, a key logistical hub, battlefield maps show, as Ukrainian officials ordered civilians to evacuate the eastern Donetsk city on Monday.
Ukrainian authorities have started to evacuate Pokrovsk and surrounding areas this week amid the Russian advance.
Russian forces carried out 87 assaults on Ukrainian positions since the beginning of the day, as of 16:00 on 20 August, with over a third of the clashes taking place on the Pokrovsk front in Donetsk Oblast.