This is a file that contains all longitude and latitudes for the US zip codes. It has proven really useful for Qlik Sense Mapping visualizations.
It contains the latitude and longitude of every United States zipcode. It also includes the City, State and County of eaech zip code.
You can use this file in a tool like Qlik Sense to make fancy maps like the one below:
You can follow these video instructions to get one of these pretty interactive maps up and running: