During the Ottoman Empire era , Erenler was a village . Between 14 March 1921 and 21 June 1921 the village saw occupation by the Greek army . During the Republican era , the population of the village increased and consequently it became a seat of township in 1963 . In 1999 Erenler suffered from the İzmit earthquake . Soon after the disaster , the town continued its growth , and it merged to the province capital . However , in 2008 it became an ilçe ( district ) center of Sakarya Province
İzmit earthquake
1999 İzmit earthquake
Erenler, Sakarya