The value of good sent overseas reached $3.8 billion in the year to the end of February, Australian Bureau of Statistics figures showed.

"China, including Hong Kong, remains the number one destination for Tasmanian exporters, consuming more than $1.26 billion in goods over the year, with Japan second at $346 million and Malaysia third at $340 million," Mr Hodgman said.

"With more than 80 per cent of Tasmania's international exports in Asian markets, it is vital that we maintain and enhance our connections with this key market, which is why the government led a trade and investment mission to Japan in March.

"Today's figures yet again confirm Tasmania has what the world wants and the government, through the recently released Tasmanian Trade Strategy, will continue to invest to open new markets and opportunities for our exporters."

The ABS estimated the value of Tasmanian merchandise exports overseas increased by 10.8 per cent for the year, with national exports up by 15.9 per cent.

Significant Tasmanian export destinations with annual growth of more than 10 per cent in export value were Japan, Thailand, Indonesia, the US, South Korea, Hong Kong, Singapore and the Philippines.

Export value to China increased by 7.6 per cent, but the value of exports to India slid by 14.7 per cent, state Treasury analysis showed.

The figures underlined mining's importance to the state's overall export performance.

Between them, exports of non-ferrous metals and metallic ores and metal scraps accounted for 55.3 per cent of the annual value of merchandise exports.

That included a $181 million (41.8 per cent) increase in the value of metallic ores and metal scraps.

Dairy was the year's other star performer, with dairy export value up by 36.5 per cent to $136 million.

Other sectors with notable increases included meat (up by 15 per cent to $257 million) and paper and paperboard (up by 9.7 per cent to $115 million).

The export value of seafood dropped back by 4.5 per cent to $229 million.

Treasury said the growth in export value to the US was mostly due to increased meat exports.