Located in Western Australia within the Joondalup local government area, Marmion is a smaller residential area (postcode 6020). With a population of 2,390, the suburb has an older-leaning population with a median age of 45. Households earn a median income of $127K per year, with an average household size of 2.7 people. Recent annual estimates show population movement staying broadly stable across the broader catchment, with population growth running at +1.4% year-on-year at the LGA level. WA employment has moved +1.9% year-on-year in the official ABS Labour Force trend series, which provides the broader jobs backdrop for this suburb. WA also had 24 Commonwealth-backed major projects under construction, 12 underway, and 12 in planning as at 2025-09-01, which is useful as a broader delivery backdrop rather than a suburb-specific project count. The most common occupations are professionals, managers, clerical & administrative. Employment in the area leans toward education and healthcare. The top ancestries reported are English, Australian, Irish.
The median house price in Marmion is $2.1 million, having fallen by 3.4% over the past year. The current median weekly rent is $900. This gives a gross rental yield of approximately 2.2%. The median monthly mortgage repayment is $2,600.
Marmion is served by 1 school, including 1 primary. The average ICSEA score is 1121, which is well above the national average of 1,000. Public transport access includes 9 bus stops.
From an investment perspective, The gross rental yield works out to roughly 2.2%, which reads as low yield. Property prices are above the state median ($2.1M/$1.0M), placing it in the premium segment. The price-to-income ratio of 16.6x is considered stretched. House prices have moved -3.4% year-on-year. Population growth of +1.4% year-on-year points to stable demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.