Largest and Smallest States and Union Territories of India

India comprises 28 states and 8 Union Territories (UTs). Understanding the extremes of their geographic area and population is critical for UPSC Civil Services Prelims, particularly for mapping, demographic dividend, and federal governance questions.

Geographical Extremes: States by Area

Largest State by Area: Rajasthan

• Total Area: 342,239 square kilometers, accounting for approximately 10.41% of India’s total geographical landmass.
• Geographical Markers: Houses the Thar Desert (Great Indian Desert) and the ancient Aravalli Range, which acts as a climate barrier. It shares a critical international border with Pakistan (Radcliffe Line).

Smallest State by Area: Goa

• Total Area: 3,702 square kilometers, contributing just 0.11% to the nation’s total landmass.
• Geographical Markers: Positioned in the Western Ghats’ Konkan region, it features an extensive coastline along the Arabian Sea and possesses high economic indicators, including a high per capita income.

Demographic Extremes: States by Population

Largest State by Population: Uttar Pradesh

• Demographic Standing: The most populous state, with estimated 2026 figures exceeding 24.3 crore inhabitants, representing roughly 17% of India’s total population.
• Geographical Advantage: Situated entirely within the highly fertile Indo-Gangetic Plains, which historically supports high population densities due to intensive agriculture.

Smallest State by Population: Sikkim

• Demographic Standing: The least populous state in India, housing roughly 6.1 lakh inhabitants according to demographic data.
• Geographical Advantage: Located in the Eastern Himalayas, bounded by Nepal, Bhutan, and Tibet (China). It is designated as India’s first fully organic state and contains Kangchenjunga, the third-highest peak globally.

Geographical and Demographic Extremes: Union Territories

Largest Union Territory by Area: Ladakh

• Total Area: 59,146 square kilometers (administered area).
• Geographical Markers: Carved out from the erstwhile state of Jammu and Kashmir on October 31, 2019. It is characterized as a high-altitude cold desert, containing the strategic Indus River valley and sharing sensitive borders with Pakistan and China.

Smallest Union Territory by Area and Population: Lakshadweep

• Total Area: 32 square kilometers.
• Demographic Standing: The least populous Union Territory, with a population under 65,000.
• Geographical Markers: An archipelago of 36 islands (including 12 atolls and 3 reefs) in the Arabian Sea. It is India’s only coral island chain and is ecologically highly sensitive.

Largest Union Territory by Population: Delhi (NCT)

• Demographic Standing: The National Capital Territory of Delhi holds the highest population among all UTs, projected at over 2.23 crore by 2026.
• Geographical Markers: Covers an area of 1,484 square kilometers, resulting in one of the highest population densities globally, driven by urban migration and economic centralization.

Comparative Matrix of All States and Union Territories by Area

UPSC Prelims Pointer Trivia

• The top three largest states (Rajasthan, Madhya Pradesh, Maharashtra) collectively occupy nearly 30% of India’s total geographical area.
• Prior to the Jammu and Kashmir Reorganisation Act of 2019, Andaman and Nicobar Islands held the position of the largest Union Territory by area.
• Dadra and Nagar Haveli and Daman and Diu were merged into a single Union Territory on January 26, 2020, significantly altering the administrative map of Western India.
• Puducherry has the unique geographical feature of being scattered across three different states: Puducherry district and Karaikal (enclaved within Tamil Nadu), Yanam (within Andhra Pradesh), and Mahe (within Kerala).