Cities like Boston and Chicago celebrate the day with parades, river dyeing, and cultural events, attracting millions of ...

Vermont and Wyoming are tied for the lowest populations in the US at just 600,000 residents each and reflecting the number of residents makes them so tiny, they can hardly be seen in the map.

A second measles-related death was reported out of New Mexico this week. Here's where measles cases have been reported in the U.S. this year.

There are 70 confirmed cases of the bird flu among humans in the U.S., as of Tuesday. The CDC said the current public health ...