Town of Dimovo is one of the youngest settlements in Northwestern Bulgaria. It was founded about 1851 under the name Osmanie after the migration of the Circassians who were chased out of the Russian Empire and accepted by the Ottoman Empire. It is very probable that there had been an older settlement on its site, but the historical data are scanty. In the years after the signing of the San Stefano Peace Treaty in 1878, and the retreat of the Turks and the Circassians towards Asia Minor, Christian families from Aegean Thrace and the Belogradchik Province settled on the site of the present-day town of Dimovo. The newly founded settlement was named Barzitsi after the nearby river.