Hillarys is a northern coastal suburb of Perth, the capital city of Western Australia. Its Local Government Area is the City of Joondalup, Western Australia. It is part of the Whitfords precinct, and is located 21 km north-northwest of Perth's central business district via Mitchell Freeway and Hepburn Avenue.
Hillarys is bounded by Hepburn Avenue to the south, Marmion Avenue to the east, Whitfords Avenue to the north and the coastal road portion of Whitfords Avenue (formerly part of West Coast Highway) to the west.
At the ABS 2001 census, Hillarys had a mostly above-average-income population of 9,238 people living in 3,421 dwellings. Hillarys's oceanside location, proximity to three private schools and to Hillarys Boat Harbour has seen the suburb become affluent since the 1980s, and the ABS identified many managers and professionals living within the suburb. However, many tradespeople and service employees also live in the area.
Hillarys is mostly a residential suburb, and relies on Westfield Whitford City, a large shopping centre in its northeast, and the smaller Whitfords Shopping Centre (2003) in Flinders Avenue for commercial services. Several parks and walkways of various sizes are situated in the suburb, and there are picnic facilities in a coastal park just north of Hillarys Boat Harbour. Unlike beaches further to the south, though, the beach at Hillarys is relatively difficult to access due to large sand dunes and remnant vegetation, and Whitford Beach to the north and Sorrento Beach to the south provide access. Off the coast is the Marmion Marine Park, which provides a home for many species of marine animals.
Hillarys Boat Harbour, a large marina development which contains the Sorrento Quay retail development, was built in 1987 and includes AQWA (formerly Underwater World) and numerous shops and eating spots, as well as a ferry terminal offering whalewatching cruises during key breeding months and ferry services to Rottnest Island operated by Hillarys Fast Ferries.