Nepean Bay, SA
Suburb profile from official open data — demographics, market signals, schools and safety.
At a glance
- Population
- 140
- Median age
- 51
- Household income
- $875/wk
- Owner-occupied
- 80%
- Renting
- 5%
- Socio-economic advantage
- Decile 6/10 in SA
- Nearest emergency dept
- South Coast District Hospital · 93 km
Sources: ABS Census 2021 & SEIFA 2021 (CC BY 4.0); distances are straight-line from the suburb's address centroid.
Current market rent
$330/wk
median, Jan-Mar 2026 · houses $330
Official state bond/rent data (CC BY), suburb level.
Community safety
0 recorded incidents in 2025
Growth & supply · Kangaroo Island
District population (2025)
5,212
+9% over 10 years
New homes approved (12 mths to May 2026)
51
houses 49 · other 2
ABS statistical district (SA2) containing the suburb centre (CC BY 4.0).
Check any address in Nepean Bay
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All figures from official open data with attribution; estimates and medians are statistical outputs, not valuations. Suburb boundaries follow ABS Suburbs and Localities (SAL) 2021.