Lewiston (postcode 5501) is a smaller suburb in South Australia within the Adelaide Plains local government area. With a population of 3,275, the suburb has an established demographic with a median age of 42. Households earn a median income of $99K per year, with an average household size of 2.9 people. Recent annual estimates show population movement into the broader catchment, with population growth running at +3.8% year-on-year at the LGA level. SA employment has moved +2.1% year-on-year in the official ABS Labour Force trend series, which provides the broader jobs backdrop for this suburb. SA also had 21 Commonwealth-backed major projects under construction, 7 underway, and 7 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 technicians & trades, clerical & administrative, labourers. Employment in the area leans toward construction and healthcare. The top ancestries reported are English, Australian, Scottish.
The current median weekly rent is $800. The median monthly mortgage repayment is $1,690.
The crime rate in the Adelaide Plains LGA is below average at 2,840 incidents per 100,000 population.
Looking at the investment signals, Population growth of +3.8% year-on-year points to strong growth demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.