A computer readable medium containing a set of computer readable instructions that when loaded into a computer configure that computer to: receive demographic data, fire station data, or other data associated with a location; receive a coordinate pair including a longitude and latitude of a location; determine a coordinate grid block bounded by latitude and longitude lines, which grid block is associated with the coordinate pair; query a database for a plurality of existing data associated with the coordinate grid block; and determine a rate based at least in part on the plurality of existing data and the demographic data, fire station data, or other data associated with a location.