Whyalla was founded as "Hummocks Hill" and was known by that name until 1916. It is the fourth most populous town in the Australian state of South Australia after Adelaide, Mount Gambier and Gawler and together with Port Pirie and Port Augusta are one of three cities that make up the Iron Triangle. As of June 2018, Whyalla had an urban population of 21,742, which had declined at an average annual rate of -0.75% year-on-year for the previous 5 years. It is a seaport located on the east coast of the Eyre Peninsula and is known as the "Steel City" due to its built-in steel mill and shipbuilding heritage. The Port of Whyalla has been exporting iron ore since 1903. The city consists of a conurbation bounded on the north by the railroad to the mining town of Iron Knob, on the east by Spencer Bay and on the south by the Lincoln Highway. The metropolitan area consists of the following suburbs arranged from east to west extending from a natural hill known as Hummock Hill: Whyalla, Whyalla Playford, Whyalla Norrie, Whyalla Stuart and Whyalla Jenkins. A port facility, a railroad yard serving the railroad to Iron Knob, and an industrial complex are located just north of Hummock Hill. Whyalla Barson and Whyalla Conservation Park are located about 10 kilometers (6.2 mi) north of town. This is an iron-rich export city that supplies China. Find and hire a top agency or company for your next big project related to Digital Marketing, Advertising, Social Media Marketing, Content Writing, Market Research, PR, Email Marketing, Mobile App Development, Web Design, Web application development, Media Planning and many more in Australia and other countries on AgencyNetwork.