Formation Dates of Indian States
Post India’s independence in 1947, there were 562 princely states. Most of the states acceded to India. Many of these princely states were transformed into new states. Later, with the States Reorganization Act of 1956, Indian states were arranged linguistically. Hence, it becomes important to know which states were formed when. The topic, ‘Indian States Formation Dates’ envisages listing down the foundation days of the Indian States and UTs. This article will give further information on the Reorganization of States.
List of Indian States Formation Dates
The list below comprises the formation dates of Indian States. Some states were formed as provinces but achieved statehood at a later date which is also mentioned in the table below:
| Indian States | Formation Dates/Years | Formed By | Status Before Foundation |
| Andhra Pradesh | 1 November 1953 | States Reorganisation Act, 1956. | Part of Andhra State and Hyderabad State |
| Arunachal Pradesh | 20 February 1987 | Created as a Union Territory by the North-Eastern Areas (Reorganisation) Act, 1971. Converted to a state by the State of Arunachal Pradesh Act, 1986 | Arunachal Pradesh Union Territory |
| Assam | 1950 | Founded by the Bombay Reorganisation Act, of 1960. | Part of Kamarupa Kingdom |
| Bihar | 1950 | The Madhya Pradesh Reorganisation Act, of 2000 founded it. | Part of Bengal Province, British India |
| Chhattisgarh | 1 November 2000 | Founded as Bihar and Orissa Province, reorganized as Bihar Province in 1936, and achieved statehood in 1950. | Part of Madhya Pradesh |
| Goa | 30 May 1987 | Founded by the State of Goa Act, 1986. | Part of Goa, Daman and Diu |
| Gujarat | 1 May 1960 | Founded by the Punjab Reorganisation Act, of 1966. | Part of Bombay State |
| Haryana | 1 November 1966 | Founded by the Himachal Pradesh (Administration) Order, in 1948 as Himachal Pradesh Province, reorganized as Himachal Pradesh (Part C State) in 1950, Himachal Pradesh Union Territory in 1956, and achieved statehood in 1971. | Part of East Punjab |
| Himachal Pradesh | 1971 | Founded by the States Reorganisation Act, of 1956 | Part of the princely states of the former Punjab State Agency |
| Jharkhand | 15 November 2000 | Founded by the Bihar Reorganisation Act, 2000 | Part of Bihar |
| Karnataka | 1 November 1956 | Founded by the States Reorganisation Act, 1956 as Mysore State, renamed Karnataka in 1973 | Part of Bombay State, Coorg State, Hyderabad State and Mysore State |
| Kerala | 1 November 1956 | Founded as Orissa Province in 1936, achieved statehood in 1950, and was renamed Odisha on 1st November 2011. | Part of Madras State and Travancore-Cochin |
| Madhya Pradesh | 1 November 1950 | Achieved statehood in 1950 | Founded by the Bombay Reorganization Act, of 1960. |
| Maharashtra | 1 May 1960 | Founded as Orissa Province in 1936, achieved statehood in 1950, and was renamed Odisha on 1st November, 2011. | Part of Bombay State |
| Manipur | 21 January 1972 | Founded by the North-Eastern Areas (Reorganisation) Act, 1971 | Manipur Union Territory |
| Meghalaya | 21 January 1972 | Founded by the North-Eastern Areas (Reorganisation) Act, 1971 | Part of Assam |
| Mizoram | 20 February 1987 | Created as a Union Territory by the North-Eastern Areas (Reorganisation) Act, 1971. Converted to a state by the State of Mizoram Act, 1986 | Mizoram Union Territory |
| Nagaland | 1 December 1963 | Founded by the State of Nagaland Act, 1962 | Nagaland Union Territory |
| Odisha | 1950 | Part of the princely states of the former Rajputana Agency | Part of Bihar and Orissa Province, British India |
| Punjab | 1947 | Founded by the Punjab Reorganisation Act, 1966 | Part of East Punjab |
| Rajasthan | 30 March 1949 | Rajasthan, earlier known as Rajputana, came into existence | Part of the princely states of former Rajputana Agency |
| Sikkim | 16 May 1975 | Founded by the Thirty-sixth Amendment of the Constitution of India in 1975 | Kingdom of Sikkim |
| Tamil Nadu | 1 November 1956 | Founded by the States Reorganisation Act, 1956 as Madras State, renamed Tamil Nadu in 1969 | Part of Madras State and Travancore-Cochin |
| Telangana | 2 June 2014 | Founded by the Andhra Pradesh Reorganisation Act, 2014 | Part of Andhra Pradesh |
| Tripura | 21 January 1972 | Founded by the North-Eastern Areas (Reorganisation) Act, 1971 | Tripura Union Territory |
| Uttar Pradesh | 24 January 1950 | Created as the United Provinces of Agra and Oudh during British rule in 1937 and Achieved statehood as UP in 1950. | United Provinces |
| Uttarakhand | 9 November 2000 | Founded by the Uttar Pradesh Reorganisation Act, 2000 as Uttaranchal, renamed Uttarakhand in 2007. | Part of Uttar Pradesh |
| West Bengal | 1950 | Achieved statehood in 1950 | Part of Bengal Province, British India |
Note –
- Goa, Puducherry, Dadra & Nagar Haveli, and Sikkim were not a part of India at the time of independence.
- Puducherry along with Karaikal, Mahe, and Yanam, was transferred to India in 1954 by the French.
- Dadra & Nagar Haveli were liberated in 1954 from the Portuguese. Similarly, Goa was liberated from Portuguese occupation in 1961.
- Sikkim became a part of India in 1974.
List of Formation Dates of Indian Union Territories
| Indian Union Territories | Formation Dates & Years | Foundation | Status Before Foundation |
| Andaman and Nicobar Islands | 1 November 1956 | Founded by the Punjab Reorganisation Act, of 1966. | Andaman and Nicobar Islands (Part D State) |
| Chandigarh | 1 November 1966 | Founded by the States Reorganisation Act, of 1956. | Part of East Punjab |
| Dadra and Nagar Haveli and Daman and Diu | 26 January 2020 | Founded by the Dadra and Nagar Haveli and Daman and Diu (Merger of Union Territories) Act, 2019. | Dadra and Nagar Haveli and Daman and Diu |
| Delhi | 1 November 1956 | Founded by the Jammu and Kashmir Reorganisation Act, of 2019. | Delhi (Part C State) |
| Jammu and Kashmir | 31 October 2019 | Founded by the Jammu and Kashmir Reorganisation Act, of 2019. | Part of Jammu and Kashmir State |
| Ladakh | 31 October 2019 | Founded by the States Reorganisation Act, of 1956. | Part of Jammu and Kashmir State |
| Lakshadweep | 1 November 1956 | Founded by the States Reorganisation Act, 1956. | Part of Madras State |
| Puducherry | 1 November 1954 | Achieved union territory status in 1962, renamed Puducherry in 2007. | Pondichéry, French India |