Test Your US Geography Knowledge

Basic U.S. geography is often considered common knowledge, with certain facts assumed to be universally known. For example, it's typically assumed that everyone knows the United States has 50 states, with 48 of them being contiguous, with Alaska and Hawaii being the exceptions. Or that Rhode Island is the smallest state, and the Colorado River flows through the Grand Canyon. But not everyone has these facts down.

Many of the questions that we think are basic U.S. geography that everyone knows, most Americans get wrong, even the amount of states that make up the nation. And there are probably many more that people don't know about U.S. geography. Take this quiz to see how you fare against the rest of the population.

What is the largest freshwater lake not only in the U.S. but the world by surface area?

Lake Superior covers approximately 31,700 square miles.

What is the only state in the U.S. that shares its border with only one other state?

The only state that Maine shares its border with is New Hampshire.

Why is Great Salt Lake in Utah salty?

Utah's Great Salt Lake is salty because there are no outlets. Its tributaries deliver small amounts of salt, and once that water reachest the lake, it evaporates, leaving the salt behind.

Which river flows through more states than any other U.S. river, and how many states does it flow through?

The Mighty Mississippi flows through 10 states, including Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi and Louisiana.

What is the most densely populated state in the nation?

New Jersey covers 8,723 square miles and has a population of 9.6 million people. That makes it the most densely populated state in the nation, with 1,259 people per square mile.

What is the Mason-Dixon Line?

While many Americans simplify the purpose of the Mason-Dixon Line as separating the north from the south, its original purpose was to resolve a border dispute between the British colonies of Pennsylvania and Maryland. It is named after the land surveyors, Charles Mason and Jeremiah Dixon and in pre-Civil War times, it was the line dividing slate states of the south and "free-soil" states of the north.

How long is the Appalachian Trail, and where does it start and end?

The Appalachian Trail is 2,190 miles. It stretches from Katahdin, Maine to Springer Mountain, GA. FUN FACT: Tara Dower just beat the record for fastest time completing the thru-hike of the Appalachian Trail. She did it in 40 days, 18 hours and 6 minutes. The average hiker takes 5-7 months to complete the journey.

Where is the longest coastline in the United States?

Alaska holds the title of the longest U.S. coastline. It spans 6,640 miles along the Pacific Ocean.

What is the lowest point in the United States?

Death Valley is located at -279 feet below sea level, making it the lowest point in the United States. It also receives the least amount of rain.

What is the highest point in the United States?

The highest point in the United States is Denali in Alaska, which measures 20,310 feet above sea level.

What are the smallest and the largest states?

Rhode Island measures 1,545 square miles while Alaska clocks in at 663,268 square miles.