Abstract: A method for the generation of demographic market sectors includes: storing transaction data entries, each related to a payment transaction and including a geographic location and transaction amount; receiving census data from governmental agencies, the census data including data related to merchant and geographic location correspondences; receiving demographic data from third party data sources, the data including at least age, gender, income, presence of children, and geographic location data for a plurality of individuals; identifying demographic market sectors based on the census and demographic data, wherein each sector includes a subset of individuals having common age, gender, income, presence of children, and geographic location and includes at least a predetermined number of individuals; and identifying market spending for each demographic market sector based on a combination of the merchant and geographic location correspondences and a subset of the plurality of transaction data entries located in t