The world / United States

United States

Capital: Washington, D.C.

• The US has 50 states and Washington, D.C., a federal district. Its population was about 341.8 million in 2025.
• At least 1,283 geysers have erupted in Yellowstone, the largest concentration of geysers in the world. The park sits on a large volcanic system.
• An estimated 800 languages are spoken in New York City, often described as the most linguistically diverse city in the world.
• The Grand Canyon is 277 miles long and over a mile deep, and the Vishnu Schist at its base is about two billion years old.

Cities

• Washington, D.C.
• New York City
• New Orleans
• Chicago
• Los Angeles