Located in South Australia within the Yorke Peninsula local government area, Nalyappa is a sparsely populated locality (postcode 5558). With a population of 18, the suburb has an older-leaning population with a median age of 54. Households earn a median income of $72K per year, with an average household size of 2 people. Recent annual estimates show population movement staying broadly stable across the broader catchment, with population growth running at +0.7% 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 managers, technicians & trades. The top ancestries reported are Australian, English, Irish.
The median weekly rent is $220 (Census 2021). The median monthly mortgage repayment is $1,194.
The crime rate in the Yorke Peninsula LGA is higher than average at 38,889 incidents per 100,000 population.
From an investment perspective, Population growth of +0.7% year-on-year points to stable demand fundamentals. Building approvals have changed +0% year-on-year, indicating steady development activity.