The capital of New South Wales is Sydney, which is a 6-letter word. Sydney is the most populous city in Australia and the state capital of New South Wales. It is located on Australia's east coast and is the largest economic and financial center in the country. Sydney is home to many iconic landmarks, such as the Sydney Opera House and the Sydney Harbour Bridge. It is also a major tourist destination, with its beautiful beaches, vibrant culture, and world-class restaurants.