Description: U.S. and Canada Airports represents airport boundaries and runways within the United States and Canada.
This data set provides six levels of generalization for displaying the data at different scales. Everything about the levels is the same but the level of generalization and its name. The least generalized level is called . The next more generalized level is called _1, and so on. For best performance, use the most appropriate generalized level when displaying or printing.
Description: U.S. ZIP Code Areas (Five-Digit) represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a five-digit ZIP Code divides the United States into 10 large groups of states numbered from 0 in the Northeast to 9 in the far West. Within these areas, each state is divided into an average of 10 smaller geographic areas, identified by the second and third digits. These digits, in conjunction with the first digit, represent a sectional center facility or a mail processing facility area. The fourth and fifth digits identify a post office, station, branch or local delivery area.
Description: U.S. Census Block Groups represents the U.S. Census block groups of the United States in the 50 states, the District of Columbia, and Puerto Rico.
Description: U.S. Populated Place Areas represents populated place areas within the United States that include both incorporated places and census designated places identified by the U.S. Census Bureau.