The U.S. population is spread out among 3.8 million square miles across 50 states, yet nearly one-third of Americans live in just three states: California, Texas and New York. New York City alone has ...

Travel every mile of the border with an interactive digital map that includes 360-degree video and shows all border fencing.

The Cooperative National Geologic Map offers a complete and detailed look at the bedrock and fault systems of the continental United States. The first geological map of the United States was published ...

A tax cap that has not been updated in almost 30 years is keeping millions from moving and selling their homes, a study found ...