Test your knowledge of US counties with this quiz! Learn about their purpose, the states with the most or fewest unique ...

FEMA’s Risk Index ranks every U.S. county by disaster risk, social vulnerability, and community resilience. Here’s what it reveals—and how to use it.

Virginia adopted this system over a century ago, after the 1870 Virginia Constitution was implemented in 1871, and solidified cities as independent entities that were separate from counties.