Australian brewer Cooper's has reported a 7.4% rise in sales by volume for the second half of 2009.

Beer volumes for the 12 months of 2009 were 58.781m litres, up 4.9% from 2008.

Managing director Dr Tim Cooper said second-half sales were particularly strong in New South Wales, up 19.2%, while Victoria was up 11.9% and Queensland rose by 11.1%.

Cooper's has been pushing into eastern states to offset a maturing market in its home state of South Australia, where sales fell 0.8 per cent in the second half of 2009.

"We've seen that our Pale Ale and Sparkling Ale sales can grow interstate, and it's just a matter of making sure we don't lose any more volume in South Australia," Dr Cooper said.

Sales of Pilsner 62 were ahead of expectations following its launch in September and the company plans to release a new low-carbohydrate beer later this month, he said.