Most marketers segment Australia by postcode or suburb. Not because it’s the right unit — because, for a long time, it was the only unit anyone could buy.
The problem is that a postcode is an average, and averages hide the people who matter. Walk down a single street in any capital city and you’ll pass a retired couple who own their home outright, a young family three years into a mortgage, a share house of renters, and an empty-nester about to downsize. Same postcode. Same “segment.” Almost nothing in common.
When you target that postcode, you pay to reach all of them equally. The household that’s about to buy your product and the household that will never consider it cost you exactly the same. Geography-level data doesn’t just blur the picture — it quietly funds the waste.
This was a reasonable compromise when household-level data didn’t exist at scale. It doesn’t hold up now. The difference between two homes on the same street isn’t noise to be averaged out; it’s the entire signal. Income, life stage, what they spend on, whether they’re in-market this month — all of it lives at the household, not the suburb.
Resolution is the unlock. When you can see the household rather than the postcode, the maths inverts: instead of paying to reach an area and hoping the right people are in it, you reach the right homes and skip the rest. The “average resident” — who never actually existed — stops setting your media budget.
At Alive Data, this is the whole point of the platform: a single, continuously refreshed profile for every Australian household, built from real-world signals rather than broad geographic guesses. Not a richer postcode. A different unit entirely.
The question worth asking isn’t which suburbs are my customers in. It’s which households — and what are they about to do.
