Semaphore, SA
Suburb profile from official open data — demographics, market signals, schools and safety.
At a glance
- Population
- 2,749
- Median age
- 50
- Household income
- $1,718/wk
- Owner-occupied
- 68%
- Renting
- 30%
- Socio-economic advantage
- Decile 8/10 in SA
- Nearest emergency dept
- The Queen Elizabeth Hospital · 6.8 km
Sources: ABS Census 2021 & SEIFA 2021 (CC BY 4.0); distances are straight-line from the suburb's address centroid.
Current market rent
$650/wk
median of 15 new leases, Jan-Mar 2026 · houses $650 · units $560
Official state bond/rent data (CC BY), suburb level.
Community safety
216 recorded incidents in 2025 · down 13.9% vs 2024
Growth & supply · Largs Bay - Semaphore
District population (2025)
15,765
+6% over 10 years
New homes approved (12 mths to May 2026)
178
houses 29 · other 149
ABS statistical district (SA2) containing the suburb centre (CC BY 4.0).
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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.