The Barrier Highway starts at Nyngan, and runs west to Cobar and on through Wilcannia and Broken Hill into South Australia.

Nyngan also lies on the Main Western railway line of New South Wales but is no longer served by passenger trains.

From the early 1840s until the middle 'eighties, it grew and flourished, servicing Canonba Station and other properties, and Cobb and Co. travellers.

In the early 1880s there were about four hotels, three or four banks, various stores and tradesmen, a police station, a telegraph and money-order office, and representatives of churches.

Nyngan has a number of heritage-listed sites, including: Approximately 10 kilometres (6.2 mi) west of the town is one of Australia's largest photovoltaic power stations, with 1.36 million solar panels.

[14][15] It complements another plant at Broken Hill, which was expected to be fully operational by the end of 2015, for a combined capacity of 155 megawatts (208,000 hp).