Circar was an English spelling of sarkar, a Mughal term for district, which has been in use since the time of Sher Shah Suri. "Northern Circars" meant the northern districts of the Nizam's dominion. Eventually "Circar" also acquired the meaning of "British Sarkar", i.e., the British government. Hence, "Sarkar districts" could also be understood as the districts under the administration of the British government.
The region was invaded by the Bahmani Sultanate in 1471; in 1541 they conquered Kondapalli, and nine years later they extended their conquests over all Guntur and the districts of Masulipatam. The sultans appear to have acquired only an imperfect possession of the country, as it was again wrested from the Hindu princes of Odisha about the year 1571, during the reign of Ibrahim, of the Qutb Shahi dynasty of Golconda and Hyderabad. In 1687 the Circars were added, along with the Golconda Sultanate, to the extensive empire of Aurangzeb. In 1724, Mir Qamar-ud-din Khan was appointed as governor of Hyderabad, with the title Nizam al Mulk. He came to be known as the Nizam of Hyderabad, its de facto ruler. The fourth Nizam Salabat Jang, a son of the Nizam al Mulk, who was indebted for his elevation to the throne to the French East India Company, granted the district of Kondavid to the French in return for their services, and soon afterwards the other circars as well. In 1759, by the conquest of the fortress of Masulipatnam, along with the dominion of the maritime provinces from the riverGundlakamma River to the Chilka Lake, was necessarily transferred from the French to the British. But the British left them under the administration of the Nizam, with the exception of Masulipatnam, which was retained by the British. In 1765 Lord Robert Clive obtained from the Mughal emperorShah Alam II a grant of the five Circars. Hereupon the fort of Kondapalli was seized by the British, and on 12 November 1766 a treaty of alliance was signed with Nizam Ali Khan by which the Company, in return for the grant of the Circars, undertook to maintain troops for the Nizam's assistance. By a second treaty, signed on 1 March 1768, the Nizam acknowledged the validity of Shah Alam's grant and resigned the Circars to the Company, receiving as a mark of friendship an annuity of £50,000. Guntur, as the personal estate of the Nizam's brother Basalat Jang, was excepted during his lifetime under both the treaties. He died in 1782, but it was not till 1788 that Guntur came under British administration. Finally, in 1823, the claims of the Nizam over the Northern Circars were bought outright by the Company, and they became a British possession. The Northern Circars were governed as part of Madras Presidency until India's independence in 1947, after which the presidency became India's Madras State. The northern, Telugu-speaking portion of Madras state, including the Northern Circars, was detached in 1953 to form a new 'Andhra State'. The Andhra State was merged with the Telugu speaking parts of Hyderabad State in 1956 to form a united Andhra Pradesh. The two were bifurcated again in 2014.