| getStates | getStates returns the list of states which have zip codes which fall in a specified radius in lower case format for use in choroplethrZip |
| getZipPop | getZipPop returns a data frame of zipcodes and their population where the zip codes fall within a given radius for use in choroplethrZip |
| getZips | getZips returns the list of zip codes as a character vector which have zip codes which fall in a specified radius in lower case format for use in choroplethrZip |
| zipRadius | The zipRadius Function |