A method for rating insurance products using a programmed computer system comprising: receiving a coordinate pair comprising a longitude and a latitude of a location; determining a target coordinate grid block bounded by latitude and longitude lines, which grid block is associated with the coordinate pair; querying a database for a first set of existing data associated with the target coordinate grid block, wherein the existing data was associated with the target coordinate grid block prior to receiving the coordinate pair; querying a database for a second set of existing data associated with a regulator, which regulates insurance policies in a geographic area comprising the location; and calculating a pure premium based on constant values and an analysis of the data in the first set and the second set.