For thousands of years prior to the arrival of Europeans, the Yanchep area was inhabited by the
Indigenous Australian Noongar people, and was a noted hunting site. The name Yanchep was adapted from the Noongar word "Yandjip", or "Yanget", which is their name for the bulrush reed that is common in the wetlands of the area (compare
Yangebup in the city's south). Following British settlement, the land now occupied by Yanchep was being used as a sheep station. In 1917, the Alex T. Brown was wrecked on the Yanchep coast, with timber salvaged for use in early Wanneroo buildings. In 1970, Alan Bond bought approximately of land at Yanchep and Bond Corporation developed designs for "Yanchep Sun City" - a future satellite city of over 200,000 residents. The first houses in the area were built in 1972, and the marina at nearby Two Rocks was built as part of the same project two years later. However, sales of homes in the area had already slowed down by 1974. In 1977, the project was bought out by
Tokyu Corporation after Bond Corporation began experiencing financial difficulties. In the Western Australian State Government's "
Directions 2031" urban expansion plan, Yanchep was once again highlighted as a future satellite city and major metropolitan centre. The
Smorgon family is developing the north coastal area Capricorn Beach as a planned development. On 11 December 2019, a fire that started in Yanchep burnt over several days through about 14,000 ha across
Two Rocks and into the
Shire of Gingin. Approximately 6,000 homes were saved, with only one being lost. The original Yanchep petrol station, owned by local Yanchep residents, was destroyed in the fire. The once-thriving small business, built around a heritage listed building that had been in continual operation since the 1920s, has been referred to as an icon of old Yanchep. ==Demographics==