I would like a PHP script created where we could upload a .csv of customer billing addresses and the software would tell us how many customers we have in each region we target, while also giving us the percentage of the population in that zip code.  The master dataset will have every zip code in a single state and the county/population of each zip code. We will provide this information.  When we upload a csv, it will count the number of customers in each zip code, and give a percentage of the total population.  For example:  County A has a population of 100 people and we have 20 customers. This would show:  County A | 100 | 20 | 20%  We should be able to sort, filter, and export all data to an excel sheet.  Also, this uploaded .csv should be automatically deleted from the database to prevent load issues.  Please let me know what other questions you have.