Roadways

With its cities spread across the continent, approximately 511,400 miles of roads create a vital network link in Australia. The country has many National Highways, and State/Territory Routes. The route numbering is a mix of the American and British System, which is still not followed uniformly in all the states.

Railroads/ Railways

Australia has the seventh largest railway network in the world, with 25,763 miles of tracks. Some of the busiest passenger train stations in the country are Adelaide station, Adelaide; Central station and Roma Street station, Brisbane; Flinders Street Station and Southern Cross Station, Melbourne; Perth railway station, Perth; and Central station, Sydney.

Airways

Australia has approximately 467 airports, of which the 10 largest ones are: Sydney, New South Wales; Melbourne, Victoria; Brisbane, Queensland; Perth, Western Australia; Adelaide, South Australia; Gold Coast, Queensland; Cairns, Queensland; Canberra, Australian Capital Territory; Hobart, Tasmania; and Darwin, Northern Territory.

Waterways

With a vast coastline touching two oceans, Australia has many ports. Some ports are dedicated for passengers, while others are for cargo. Important ports of are; Brisbane, Cairns, Gladstone, Hay Point, and Newcastle, in Queensland; Dampier, Fremantle, Port Hedland, and Port Walcott, in Western Australia; Darwin in Northern Territory; Hobart and Port Dalrymple, in Tasmania; Geelong and Melbourne in Victoria; Port Adelaide and Port Lincoln in South Australia; and Jervis Bay, Port Kembla, and Sydney in New South Wales.

Satellites

For the year 2013, Australia had a total of six operating satellites. Of these, four are commercial satellites, one is a civil satellite, and one is a military satellite.

Telephone/ Mobile network

The international country code for Australia is 61. There were 10.57 million telephone lines used, and 24.49 million mobile cellular connections in the country, according to 2011 data.

Internet

The internet country code for Australia is ‘.au,’ and as per the 2015 data, there were 19.238 million internet users in the country.

Settlements

Based on the 2011 census, the 10 most populated cities of Australia are; Sydney, Melbourne, Brisbane, Perth, Adelaide, Gold Coast, Canberra, Newcastle, Wollongong, and Logan City.