Wellesley Islands is a close-knit residential community in Queensland within the Mornington local government area (postcode 4892). It is home to about 1,022 residents, with a young professional demographic and a median age of 29. Households earn a median income of $44K per year, with an average household size of 3.5 people. Recent annual estimates show population movement staying broadly stable across the broader catchment, with population growth running at +1.1% year-on-year at the LGA level. QLD employment has moved +1.5% year-on-year in the official ABS Labour Force trend series, which provides the broader jobs backdrop for this suburb. QLD also had 35 Commonwealth-backed major projects under construction, 16 underway, and 30 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, community & personal service, labourers. Employment in the area leans toward public admin & safety and education. The top ancestries reported are Aboriginal Australian, English, Australian.
The median weekly rent is $104 (Census 2021).
Wellesley Islands is served by 1 school, including 1 combined. The average ICSEA score is 660, which is well below the national average of 1,000. Healthcare facilities include 1 public hospital. The crime rate in the Mornington LGA is higher than average at 60,745 incidents per 100,000 population.
Looking at the investment signals, Population growth of +1.1% year-on-year points to stable demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.