The customer analysis section of your plan must first identify the key customer segment your NPO serves. For example, do you serve underprivileged children? Or young mothers in crisis? Or neglected animals?
Whoever you serve, identify them and then provide details on them. How many of them are there in the geographic region you plan to serve? What are their needs? Is anyone currently satisfying these needs, and if so, what are they doing well and where are they lacking.