I'm working on a delivery service that only delivers within certain ZIP codes (probably, but not necessarily, all contiguous). Given a list of ZIPs, how do I get a map on which those ZIPs' areas are highlighted or outlined?
http://www.udsmapper.org/ This should be exactly what you need.. for personal/non-commercial use only though... If you have a list of zip codes you can even paste them into the system and they'll automatically map! Here is their user guide too: http://www.udsmapper.org/docs/NEW_Instructions_Creating_Service_Area_Map_10102014.pdf