Use the form on the right to search for any zip code in your state or in the U.S. This will give you a map and more information on the zipcode. You can also change the dropdown menu to find the driving distance between zip codes if you're planning a road trip. Or figure out how much it would cost to drive from one local zip to another.
To start out, you might want to check the latitude and longitude of 20146 which is in Ashburn, Virginia.