List of districts of Sikkim

Following the merger of Kingdom of Sikkim with India in 1975 when Sikkim became 22nd state of India, original four districts were formally established in at same time. On 21 December 2021, the Government of Sikkim announced the formation of 2 new districts as well as the renaming of the existing 4 districts - North Sikkim district to Mangan; West Sikkim district to Gyalshing, East Sikkim district to Gangtok district, and South Sikkim to Namchi district.^[1] The Pakyong subdivision of East Sikkim district was carved out to form Pakyong district and the Soreng subdivision was carved out from West Sikkim district to form Soreng district.^[2]

The existing districts are as follows (listed clockwise from southwest):

#	Code[3]	District[4]	Headquarters	Population (Density /km2)[4] (2011)	Area (km2)	Official Website	Map	Comments
1	SGS	Soreng	Soreng	64,760 (221)	293	soreng.nic.in	(Soreng in southwest Sikkim)	Created in 2021 from southern part of Gyalshing district.
2	WS	Gyalshing	Gyalshing	136,299 (117)	1,166	gyalshing.nic.in	(Gyalshing in western Sikkim)	Demand to create new Dentam district from the western part of Gyalshing district.
3	NS	Mangan	Mangan	43,354 (10)	4,226	mangan.nic.in	(Mangan covering entire northern Sikkim)	Demand to create new Chungthang district from the northern part of Mangan district.
4	ES	Gangtok	Gangtok	281,293 (295)	954	gangtokdistrict.nic.in	(Gangtok in east Sikkim including Nathu La)	Demand to create new Sang-Rabdang district from the western part of Gangtok district.
5	PS	Pakyong	Pakyong	74,583 (180)	404	pakyongdistrict.nic.in	(Pakyong in southeast Sikkim on India-Bhutan-Tibet tri-junction)	Created in 2021 from Gangtok. Demand to create new Rongli-Rhenock district from the east-southeast-southwest part of Pakyong district.
6	SS	Namchi	Namchi	146,742 (196)	750	namchi.nic.in	(Namchi in south-central Sikkim)
	IN-SK	Sikkim state	Gangtok (state capital)	610,577 (86)	7,096	sikkim.nic.in	(Districts and rivers)	Merged with India in 1975.

Demand is largely driven by the better geostrategic border management (e.g. protect Chicken's neck like Siliguri Corridor), disaster management (e.g. 2023 Sikkim flash floods), and better services closer to the remote populations. Listed clockwise from southwest Sikkim:

• Dentam district (from Gyalshing district in southwest Sikkim bordering Nepal): Residents of the Maneybong–Dentam Assembly constituency have long advocated for a separate district to reduce travel time to the current headquarters in Gyalshing. While a new Sub-Divisional Magistrate (SDM) Office was reviewed for inauguration in early 2026, local political leaders have frequently categorized the area as a "Western Gateway" requiring higher administrative autonomy.^[5] The proposed Dentam district will have 1 out of 2 Sub-Divisions (Dentam Sub-Division in the west to new district while Gyalshing Sub-Division in the east will stay in the existing parent district), out of 4 assembly constituencies (Maneybong-Dentam constituency in Dantem while other 3 - Gyalshing-Barnyak, Yangthang, and part of Uttarey will remain in the parent district), 3 out of 10 revenue circles (listed west-to-east - Uttarey, Dentam, and Hee-Gaon), and 15-18 out of 50+ revenue blocks.

• Chungthang district (from Mangan district in alpine northern-most Sikkim bordering Tibet): Chungthang is 30 km north of Mangan city. Due to its high-risk profile for natural disasters, such as the 2023 glacial floods, there is a recurring demand to upgrade the Chungthang Sub-Division to a full district. Proponents argue that a district-level administration is necessary for rapid emergency response and better management of the remote Northern Tundra border regions.^[6][7] The proposed Chungthang district will have 1 out of 4 Sub-Divisions (Chungthang in high altitude north; while other 3 - Dzongu in northwest, Mangan in the middle, and Kabi in the south - will remain in the parent Mangan District), less than 1 assembly constituency (northern portion of Lachen-Mangan constituency; while other 3 - Dzongu, Lachen-Mangan, and Kabi-Lungchok will remain in the parent district), 3 out of 8 revenue circles (Chungthang, Lachen, and Lachung), 12-14 revenue blocksout of ~40 (e.g. Lachen, Lachung, Naga, etc.).

• Rongli-Rhenock district (from east-southeast and southwest Pakyong district on India-Tibet-Bhutan tri-junction): Demands for a district in the eastern industrial belt are frequently cited as necessary for economic and administrative autonomy.^[8] New district will have 1 out of 3 existing Sub-Divisions of Pakyong (Rongli which currently includes Rhenock with later to become new Sub-Division; while Pakyong and Rangpo Sub-Divisions will stay in Pakyong district), 2 out of 5 constituencies (Rhenock and Chujachen will move to new district; while other 3 - West Pendam, Gnathang-Machong, and Namcheybung - will remain in Pakyong district), 3 out of 14 revenue circles (Rongli, Subaneydara, and Rhenock), and 20+ revenue blocks out of total 60.

• Sang-Rabdang (40 km west of Gangtok and 40 km west of Pakyong, from western Gangtok district): Elevated to sub-divisional status in 2024, local representations continue to seek district status to decentralize the Gangtok administration.^[9] Sang-Rabdang Sub-Division (formerly just Rabdang Sub-Division) in Gangtok district serves the Singtam-Khamdong and Martam-Rumtek constituencies comprising 3 revenue circles (Rabdang, Khamdong, and Tumin) and 22 revenue blocks.

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