How to Determine Regional Response with the Australian Postcode Survey.
A postcode survey is a two stage affair. The first step is to determine how response varies from region to region. Some regions will be more resistant to advertising advertising than other regions. Your first postcode survey is to determine which regions are most receptive to advertising, and to classify regions by receptivity to a common advertising campaign.
Collect postcodes on every sale for the period that your advertising campaign has been visible. When this is done, tally up the sales in each postcode. Classify regions into one of three or five different response categories from worst to best. These classifications will be useful in helping you develop the optimum advertising strategy for each regional category.
Ultimately, the information you have gathered at this stage indicates which regions are the most profitable to work in and which regions require the most research to turn into profitable sales territories. It is always worth developing more sales territories. The more sales territories you develop, the more income your business can generate.