Chamba State was one of the oldest princely states in present-day Republic of India, having been founded during the late 6th century. Its last ruler signed the accession to the Indian Union of 15 April 1948.
According to tradition Chamba state was founded around 550 AD. In 900 the capital was moved to Chamba. Between 1809 and 1846 Chamba was tributary to Jammu. In 1821 Chamba annexed Bhadrawah State. On 9 Mar 1846 Chamba State became a British protectorate.