Longest Coastline in India: State-wise List updated(2025)

Longest Coastline in India: Updated State-Wise Data After 2023 Revision

Gujarat has the longest coastline among Indian states. This is according to the Terms of Reference (ToR) approved by the National Security Council Secretariat (NSCS), New Delhi, on August 10, 2023. However, when including island territories, the Andaman & Nicobar Islands have the longest coastline in India. Their coastline measures 3,083.50 km.

The total length of India’s coastline has been officially re-assessed as 11,098.81 km by the Naval Hydrographic Office (NHO) in collaboration with the Survey of India, based on the latest ToR guidelines. old coastline was 7516.6 KM before 2023. This includes the coastlines of all coastal states and union territories, covering both mainland and island regions.

What is coastline?

A coastline is defined as the line between Land and Sea. In case of India the line between Indian land and Indian Ocean is known as coastline of India. Coastlines are dynamic and constantly changing due to geological and oceanographic processes, including erosion, accretion, and sea-level changes.

India’s coastline touches nine states and four union territories:

Union Territories: Puducherry, Andaman & Nicobar Islands, Lakshadweep, Dadra & Nagar Haveli and Daman & Diu
States: Gujarat, Maharashtra, Goa, Karnataka, Kerala, Tamil Nadu, Andhra Pradesh, Odisha, West Bengal

Old vs New Coastline Length of India: Explained

The earlier officially recorded coastline length of India was 7,516.6 km, based on a survey conducted by the Ministry of Home Affairs in the 1970s. This measurement was derived from the cartographic data available at that time, likely calculated using maps at a scale of 1:4,500,000 or smaller.

The re-verified coastline length of 11,098.81 km was finalized by the Naval Hydrographic Office (NHO) in coordination with the Survey of India. This new measurement is more precise. It uses modern geospatial tools and data at a finer scale of 1:250,000. The increase in length is due to differences in scale, methodology, and technology. The updated data is more accurate and standardized. It supports better national planning, maritime security, and environmental management.

Top 5 Indian States/UTs with the Longest Coastline

Rank	State/UT	Coastline Length (km)
1	Andaman & Nicobar Islands	3,083.50
2	Gujarat	2,340.62
3	Tamil Nadu	1,068.69
4	Andhra Pradesh	1,053.07
5	Maharashtra	877.97

Coastal states of India before 2023

State	Approx. Coastline (km)
Gujarat	1,214.7
Andhra Pradesh	973.7
Tamil Nadu	906.9
Maharashtra	652.6
Kerala	569.7
Odisha	476.4
Karnataka	280
West Bengal	157.5
Goa	101
Andaman & Nicobar Islands	1,962
Lakshadweep Islands	132
Daman & Diu	42.5
Puducherry	47.6

After 2023 update by Naval Hydrographic Office (NHO) in coordination with the Survey of India. the Indian coastline has Increased from 7516 km to 11098 Km which is about a 47.6% increase in the measured length over the past five decades.

Updated coastline of India after 2023

Sl. No.	State/Union Territory	Coastline (km)
1	Gujarat	2,340.62
2	Maharashtra	877.97
3	Goa	193.95
4	Karnataka	343.30
5	Kerala	600.15
6	Tamil Nadu	1,068.69
7	Andhra Pradesh	1,053.07
8	Odisha	574.71
9	West Bengal	721.02
10	Daman & Diu	54.38
11	Puducherry (Pondicherry)	42.65
12	Lakshadweep Islands	144.80
13	Andaman & Nicobar Islands	3,083.50
	Total	11,098.81