US Islands Trivia Quiz – Names, Facts and Surprises

This US islands trivia quiz hops from the Hawaiian Islands and Puerto Rico to Manhattan, Martha's Vineyard, Kodiak and the Florida Keys. Ten questions cover names, facts and surprises.

Start US Islands Trivia Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Size
What is the largest island in the United States?
Alaska
Which Alaska island is famous for its giant brown bears?
New York
Which island is the most populous in the United States?
Massachusetts
Which island off Cape Cod is known for its whaling history?
Florida
Which island city is the southernmost in the continental United States?
Territories
Which Caribbean island is a US territory with San Juan as its capital?
Michigan
Which Michigan island bans most cars and uses horses and bicycles instead?
California
Which island in San Francisco Bay housed a famous federal prison until 1963?
Pacific
Guam belongs to which island group?
Hawaii
Which Hawaiian island is nicknamed the Garden Isle?

Explanations: answer key for all 10 questions

Q1: What is the largest island in the United States?
Answer: Hawaii (the Big Island)
The Big Island covers about 10,430 square kilometers and is still growing as lava from Kilauea reaches the sea.
Q2: Which Alaska island is famous for its giant brown bears?
Answer: Kodiak Island
Kodiak bears are among the largest bears on Earth. Kodiak is the second-largest island in the US.
Q3: Which island is the most populous in the United States?
Answer: Long Island
Long Island has about 8 million residents, including the New York boroughs of Brooklyn and Queens.
Q4: Which island off Cape Cod is known for its whaling history?
Answer: Nantucket
In the early 1800s, Nantucket was a world center of whaling. Herman Melville mentions it often in Moby-Dick.
Q5: Which island city is the southernmost in the continental United States?
Answer: Key West
A painted buoy in Key West marks the southernmost point, about 145 kilometers from Cuba.
Q6: Which Caribbean island is a US territory with San Juan as its capital?
Answer: Puerto Rico
Puerto Ricans have been US citizens since 1917. Old San Juan's fortress, El Morro, dates to the 1500s.
Q7: Which Michigan island bans most cars and uses horses and bicycles instead?
Answer: Mackinac Island
Motor vehicles have been banned on Mackinac Island since 1898, so visitors travel by horse-drawn carriage or bike.
Q8: Which island in San Francisco Bay housed a famous federal prison until 1963?
Answer: Alcatraz
Alcatraz held prisoners such as Al Capone. Today it is part of the Golden Gate National Recreation Area.
Q9: Guam belongs to which island group?
Answer: Mariana Islands
Guam is the largest and southernmost of the Mariana Islands. Local residents like to say America's day begins there.
Q10: Which Hawaiian island is nicknamed the Garden Isle?
Answer: Kauai
Kauai is the oldest of the main Hawaiian Islands. Its Na Pali Coast and Waimea Canyon are famous for rugged scenery.

Us Islands Trivia Quiz – An Island Nation Within a Nation

The United States has thousands of islands, from the volcanic chain of Hawaii to the barrier islands of the Atlantic and Gulf coasts. Alaska alone has more than 2,600 named islands, including Kodiak and the long Aleutian chain.

Islands shaped American history. Ellis Island processed millions of immigrants, Alcatraz became a legendary prison and Roanoke Island hosted an early English colony that vanished. Today islands like Martha's Vineyard and the Florida Keys are popular vacation spots.

What This Quiz Teaches

This quiz is useful for travelers and geography fans who want to match each island with its state and story.

Which island is largest and which is most populous
Why cars are banned on Mackinac Island
Where the southernmost city is
Which islands are US territories
What Kodiak and Alcatraz are known for

Did You Know?

Manhattan was purchased in 1626, according to tradition, for goods worth 60 guilders.
Padre Island in Texas is the longest barrier island in the world.
The US Virgin Islands were bought from Denmark in 1917.
Isle Royale in Lake Superior is famous for its wolves and moose.
Ellis Island processed about 12 million immigrants between 1892 and 1954.