Koondrook is connected by a bridge to its twin town of Barham in the neighbouring state of New South Wales. Industry in the area includes dairying on the river flats, and citrus production using irrigation supplied from the Murray River. Timber from the surrounding state forests is used in the production of redgum timber and furniture. Citrus grown in the area is used by a local processing plant to produce 'The Great Australian Squeeze' organic orange juice, which is distributed in local grocery stores and across Australia in an agreement with Woolworths supermarket.