Mazalak Ahmed was established in 1494 AD and the capital city of Nizamshah became known as Ahmednagar city by his name. Since Ahmednagar city was headquartered in the district, Ahmednagar was given the name of the district. After the end of Peshwa, Ahmednagar district was formed in 1822. At that time the border of Ahmednagar district was from Wani in present day Nashik district and second end to the district of Solapur in Karmala. Due to the formation of Nashik and Solapur districts in 1869, Wani and Karmala were excluded from Ahmednagar district. The Ahmednagar District of Pune Revenue Division was incorporated in the new revenue department Nashik from February 1981.