Best Australian suburbs to invest in.

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9,375 suburbs · ABS · ATO · SQM Research · Domain · realestate.com.au · State infrastructure authorities

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Your recommended picks

Best buys under $400k

Best overall pick for you
🥇Balanced pick

Mount Gambier

Best all-rounder on the index — no single dimension dominates and none lags.

Why it wins · Most balanced profile in your filter — +3 pts over Whyalla.

Stable but fully pricedSA · 5290$395k median
38Weak
Details
Drivers
  • Capital growth8.2%/yr
  • Population growth+6.5% (5y)
Risks
  • At top of budget (99% of cap)
  • No major construction project in this state
Mount Gambier · scored against your filter
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🥈Growth

Murray Bridge

58Moderate
SA · $395k
Drivers
  • Capital growth9.2%/yr
  • Population growth+6.5% (5y)
  • Rental yield3.2%
Risks
  • At top of budget (99% of cap)
  • No major construction project in this state
Stable but fully priced
Open →
🥉Yield

Port Augusta

52Moderate
SA · $295k
Drivers
  • Capital growth7.4%/yr
  • Rental yield3.4%
  • Population growth+6.5% (5y)
Risks
  • No major construction project in this state
Stable entry point
Open →

Score legend · 0–40 weak · 40–60 moderate · 60–75 strong · 75+ exceptional. Scores blend growth, yield, demand and infrastructure signals against your strategy. Full methodology →

WeakModerateStrongStandoutExceptional
040607585+
Last updated May 2026Next refresh 3 June 2026Informational only — not financial advice
Compare Murray Bridge · Port Augusta · Mount Gambier side-by-side under $400kCompare picks

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All ranked suburbs

Top 5 SA suburbs under $400k

Why am I seeing this? Ranked across every suburb that fits your filter — click any card for the full breakdown.

How is this calculated?

We score every suburb 0–100 against eight benchmarks a working buyer's agent watches: capital growth, rental yield, vacancy, listings trend, population growth, income growth, budget headroom, and the construction pipeline within reach.

The composite is a weighted average. The Top Picks above re-rank under a Growth-tilted, Yield-tilted, and Balanced scheme so each investor profile gets a single recommendation.

WeakModerateStrongStandoutExceptional
040607585+
Market mode
Base marketInfrastructure-weighted ⭐

Tier CC — ModerateScore 40–591 suburb

  1. #1

    Murray Bridge

    9.2%/yr capital growth, population +6.5% (5y).

    5y growth · 9.2%/yr
    40
    Growth🟡 Near cap
    Drivers
    • Capital growth9.2%/yr
    • Population growth+6.5% (5y)
    • Rental yield3.2%
    Risks
    • At top of budget (99% of cap)
    • No major construction project in this state
    5253 · Murray BridgeCompare investment case

Tier DD — Below trendScore <404 suburbs

  1. #2

    Port Augusta

    7.4%/yr capital growth, 3.4% gross yield.

    Growth + yield · 7.4% · 3.4%
    39
    Balanced🟢 Under budget
    Drivers
    • Capital growth7.4%/yr
    • Rental yield3.4%
    • Population growth+6.5% (5y)
    Risks
    • No major construction project in this state
    5700 · Port AugustaCompare investment case
  2. #3

    Mount Gambier

    8.2%/yr capital growth, population +6.5% (5y).

    5y growth · 8.2%/yr
    38
    Growth🟡 Near cap
    Drivers
    • Capital growth8.2%/yr
    • Population growth+6.5% (5y)
    Risks
    • At top of budget (99% of cap)
    • No major construction project in this state
    5290 · Mount GambierCompare investment case
  3. #4

    Whyalla

    4.2% gross yield, 7.2%/yr capital growth.

    Growth + yield · 7.2% · 4.2%
    35
    Balanced🟢 Under budget
    Drivers
    • Rental yield4.2%
    • Capital growth7.2%/yr
    • Population growth+6.5% (5y)
    Risks
    • Only 3,609 residents — illiquid, slow to sell
    • No major construction project in this state
    5600 · WhyallaCompare investment case
  4. #5

    Port Pirie

    7.8%/yr capital growth, population +6.5% (5y).

    Growth + yield · 7.8% · 3.2%
    22
    Balanced🟢 Under budget
    Drivers
    • Capital growth7.8%/yr
    • Population growth+6.5% (5y)
    • Rental yield3.2%
    Risks
    • Only 176 residents — illiquid, slow to sell
    • No major construction project in this state
    5540 · Port Pirie RegionalCompare investment case