Satellite image showing the boundaries of Saguaro National Park in Arizona.

The only country… geographic facts – World of Geography

Here are some interesting geographic facts that are unique to individual US states and do not occur in any other state.

Alabama

Alabama is the only state that has it All major natural resources needed to make iron and steel.

Alaska

Alaska is the only state that extends to the Arctic Circle, and is home to the highest peak in North America, Mount McKinley.

Alaska is the only northernmost and westernmost US state.

Alaska is the only state in the United States that has coastlines on two different oceans: the Arctic Ocean and the Pacific Ocean.

Arizona

Arizona is the only US state that Contains part of the four North American deserts: the Great Basin, Sonoran, Chihuahuan, and Mojave. This convergence of desert ecosystems does not occur in any other country.

Saguaro National Park is located west of Tucson, Arizona. Image: Landsat 8, NASA.

Arkansas

Craters of Diamonds State Park in Arkansas is the only park in the United States where visitors can mine and keep diamonds.

California

California is the only state that hosts the highest point (Mount Whitney) and lowest point (Death Valley) in the contiguous United States.

California is the only state that has hosted both the Summer and Winter Olympic Games. The state has hosted three Olympic Games: the 1932 Los Angeles Summer Olympics, the 1984 Los Angeles Summer Olympics, and the 1960 Squaw Valley Winter Olympics.

Connecticut

Connecticut is the only state in the United States where The provinces do not have an independent government They are just geographical areas on the map. Legislation passed in 1959 and 1961 abolished the duties and functions of the state’s eight districts.

Colorado

Colorado is the only state in the United States with every part of its territory more than 1,000 meters (3,280 ft) in elevation.

Delaware

Delaware is the only state without any national park system units such as a national park or a national monument.

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Florida is the only state that has a tropical climate in parts of its territory and is the closest state to the equator in the United States.

Florida is the only state in the continental United States where extensive formations of shallow coral reefs can be found off its coast.

Georgia

Georgia is the only US state that includes the geographic region known as the Appalachian Ridge and Valley, where hills and valleys run parallel to each other. This unique topographical feature, located in the northwestern part of the state, distinguishes Georgia from other US states.

Hawaii

Hawaii is the only state that is considered an archipelago, a chain of islands located in the middle of the Pacific Ocean. The Hawaiian archipelago consists of 137 islands, including eight major islands, and stretches over 1,500 miles. The formation of the Hawaiian Islands is attributed to volcanic activity, with several active volcanoes still present on the Big Island.

Hawaii is also the only US state that does not share a land border with another state or country. As an archipelago, Hawaii is the only state entirely surrounded by the Pacific Ocean.

Fact sheet with Landsat image of Hawaii.

Idaho

Idaho has the only US state seal designed by a woman, which was designed by Emma Edwards Green in 1891.

Illinois

Illinois is the only US state where the majority of its territory is covered by a particular type of soil, known as alluvial drummer clay. It is the soil of the state and represents the vast prairie lands that once covered Illinois.

Dark yellow, dark orange, and dark green labeled map to show historic grasslands in the United States.
Ecological counties in the United States that historically contained tall, mixed, and shortgrass prairies (pre-European settlements). Map: Caitlin Dempsey with data from the United States Ecoregion, USGS, and USDA Forest Service.

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Iowa is the only state whose eastern and western borders consist entirely of water (the Missouri and Mississippi rivers).

Kansas

Kansas is the only state that has been scientifically proven to be “flatter than pie” by researchers. in Study conducted by geographers at Texas State University and Arizona State University in 2003topographic analysis found that the state’s flatness is indeed greater in some areas than the surface of a pie.

A field in Kansas with sunflowers in bloom.
Kansas is home to very flat terrain. Sunflowers are a ubiquitous sight in Kansas and were named the official state flower in 1903. Photo: Mark Vandiver, USGS, Public Domain.

Kentucky

Kentucky is the only US state with a cave system that stretches over 400 miles. Kentucky has a unique geographic feature known as the Mammoth Cave System, which is the longest known cave system in the world. With more than 400 miles (640 kilometers) of explored passages, this vast cave system is located in the heart of Kentucky and is a World Heritage Site.

Yellow map of Mammoth Cave from 1835.
Map of Mammoth Cave, the largest cave system in the United States. Map: 1835 via LOC.gov.

Louisiana

Louisiana is the only state in the United States that has political subdivisions called parishes, which are equivalent to counties.

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Maine is the only state that shares its borders with only one other US state (New Hampshire) and has the easternmost point in the contiguous United States.

Maine is the only US state with a one-syllable name.

Maryland

Maryland is The only country without a natural lake.

Michigan

Michigan is the only state that consists of two peninsulas, the Upper and Lower Peninsulas, separated by the Straits of Mackinac.

Michigan is the only state with a floating post office, JW Westcott II.

Michigan is the only state with coastlines on four of the five Great Lakes – Michigan, Superior, Huron, and Erie – and has The longest freshwater coast in the United States.

Shaded relief map showing the Great Lakes in blue and the surrounding areas in shades of green and yellow.
Michigan borders four of the five Great Lakes. Map: Caitlin Dempsey.

Montana

Montana is The only producer of palladium and platinum in the United States of America. Palladium is a chemical element used in dental alloys and automobile catalytic converters. Platinum is also used in catalytic converters and is the metal of choice for jewelry.

South Carolina

South Carolina is the only state with large-scale commercial tea plantations.

South Dakota

South Dakota is the only state that includes the geographic center of the entire United States, near the town of Belle Forche.

Map showing the locations of the US geographic center of the region, median population center, and median population center, 2010 (US Census Bureau).
Map showing the locations of the US geographic center of the region, median population center, and median population center, 2010 (US Census Bureau).

Tennessee

Tennessee is the only state that is bordered by eight other states, more than any other state in the country.

Texas

Texas is the only state that was an independent country, known as the Republic of Texas, before it became part of the United States.

Vermont

Vermont is the only state without any buildings taller than 124 feet (38 m).

Virginia

Virginia is the only state entirely within the region commonly known as Appalachia, which is covered almost entirely by mountainous terrain.

Washington

Washington is the only state named after President George Washington who was the first president of the United States.

West Virginia

West Virginia is the only US state located entirely within a mountain range.

West Virginia is the only state created by secession from a Confederate state.

Fact sheet with Landsat image for West Virginia.

Wisconsin

Wisconsin is the only state that has an official state microbe. Lactococcus lactisIt is used in the manufacture of cheese.

Wyoming

Wyoming is the only state in the United States with a population less than 600,000, as per the 2020 census.

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