
Median income. Spending ability is important.While people purchase HVAC systems, "households" consume those systems. For example, if you sell heating and air conditioning systems, knowing the number of households is more important than simply knowing the total population in your area. Total households. In some cases determining the number of total households is important depending on your business.

Determining the total population for the market is not particularly helpful if your product or service does not serve a need for the entire population. Plus, again in general terms, women make up a relatively small percentage of jet ski purchasers. Say you sell jet skis anyone under the age of 16 and over the age of 60 or so is unlikely to be a customer.

Who is my average customer? Who am I targeting? (Unless you plan to open a grocery store, you should be unlikely to answer, "Everyone!").
