Nilgiri State was one of the Princely States of India during the British Raj. It belonged to the Orissa States Agency and its capital was at Raj Nilgiri, which is the modern town of Nilagiri.The state was bounded in the north and west by the State of Mayurbhanj and in the south by Balasore District.As of 1940 Nilgiri State had a population of 73,109 and an area of 263 square miles (680 km2). In 1949 it was merged into Balasore District.