The number of the big cats at the UNESCO World Heritage site has also gone up to 96 in the Indian part of the territory, up from 88 in 2018, according to the West Bengal state forest department which unveiled the latest headcount on Wednesday night.
Officials counted as many as 43 female tigers and 11 cubs using over 700 pairs of all-weather night-vision camera traps.
The Sundarbans is spread over 10,000 square kilometers (around 4,000 square miles) and derives its name from Sundari trees found abundantly in the region.
India is home to around 70 percent of the world’s tigers. Last year, the government said the tiger population had risen from 2,226 in 2014 to 2,967 in 2018.
The government credited the increase in numbers to a strict ban on hunting and awareness drives in villages.
Despite the uptick, the increasing number of human-tiger conflicts due to shrinking habitats remains an area of concern for conservationists.