Evolution of Indian States & Union Territories

Indian Polity - This article is part of a series.

Part 1: This Article

Part 2: Citizenship in India: Constitutional and Legal Provisions

Part 3: Fundamental Rights: Part III of the Indian Constitution

Part 4: Landmark Judgments of the Indian Constitution

This chronology tracks the reorganization of India’s internal borders from the adoption of the Constitution in 1950 to the present day. Understanding this evolution is essential for understanding the federal structure of India.

Major Commissions for States Reorganisation
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Commission / Committee	Year	Members	Key Findings / Recommendations
Dhar Commission	1948	S.K. Dhar (Chairman)	Recommended reorganization on the basis of administrative convenience rather than linguistic basis.
JVP Committee	1948	J.L. Nehru, Vallabhbhai Patel, Pattabhi Sitaramayya	Formally rejected language as the basis for the reorganization of states.
Fazl Ali Commission	1953	Fazl Ali, K.M. Panikkar, H.N. Kunzru	Broadly accepted language as the basis of reorganization but rejected the ‘one language-one state’ theory.

Year	State / Territory	Origin / Key Change
1950	Uttar Pradesh	Renamed from United Provinces.
1953	Andhra State	First state created on a linguistic basis (from Madras).
1956	Kerala, Mysore, Madhya Pradesh, Andhra Pradesh	Major reorganization under the States Reorganisation Act, 1956; Part A, B, C, and D categories were abolished.
1960	Gujarat & Maharashtra	Division of the former Bombay State.
1961	Dadra & Nagar Haveli	Integrated as a Union Territory.
1962	Puducherry / Goa, Daman & Diu	Puducherry’s de jure transfer to India was completed; Goa, Daman and Diu became a Union Territory after liberation in 1961.
1963	Nagaland	Carved out of Assam.
1966	Haryana	Split from Punjab; Chandigarh made UT.
1969	Tamil Nadu	Madras State officially renamed to Tamil Nadu.
1971	Himachal Pradesh	Elevated from Union Territory to full statehood.
1972	Manipur, Tripura, Meghalaya	Manipur and Tripura became states; Meghalaya was carved out of Assam as a full state.
1973	Karnataka / Lakshadweep	Mysore was renamed Karnataka; Laccadive, Minicoy and Amindivi Islands were renamed Lakshadweep.
1975	Sikkim	Joined India as the 22nd state.
1987	Goa, Arunachal Pradesh, Mizoram	Goa became a state; Arunachal Pradesh and Mizoram were elevated from Union Territories to states.
1992	NCT Delhi	Delhi gained special National Capital Territory status under the 69th Constitutional Amendment Act, 1991.
2000	Chhattisgarh, Uttarakhand, Jharkhand	Chhattisgarh was carved from Madhya Pradesh, Uttarakhand from Uttar Pradesh, and Jharkhand from Bihar.
2006	Puducherry / Uttarakhand	Official renamings from Pondicherry and Uttaranchal.
2011	Odisha	Renamed from Orissa.
2014	Telangana	Carved from Andhra Pradesh.
2019	J&K & Ladakh	J&K state reorganized into two Union Territories.
2020	Dadra & Nagar Haveli and Daman & Diu	Merger of Dadra & Nagar Haveli and Daman & Diu into one Union Territory.

Key Constitutional Amendments for Reorganisation
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Amendment	Year	Significance
7th Amendment	1956	Implemented States Reorganisation Act; introduced Union Territories.
10th Amendment	1961	Incorporation of Dadra and Nagar Haveli as a UT.
12th Amendment	1962	Incorporation of Goa, Daman and Diu as a UT.
14th Amendment	1962	Incorporation of Puducherry as a UT.
36th Amendment	1975	Sikkim made a full-fledged state of India.
69th Amendment	1991	Delhi designated as National Capital Territory (NCT).
100th Amendment	2015	Land Boundary Agreement between India and Bangladesh.

Quick Memory Map
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Linguistic Basis: 1953 - 1966
North-East Focus: 1971 - 1987
Administrative Ease: 2000 - 2014
UT Reorganization: 2019 - 2020