The Geography of Oklahoma encompasses terrain and ecosystems ranging from arid plains to subtropical forests and mountains. Oklahoma contains 10 distinct ecological regions, more per square mile than in any other state by a wide margin. One of six states on the Frontier Strip, it is situated in the Great Plains and U.S. Interior Highlands region near the geographical center of the 48 contiguous states. Usually considered part of the South Central United States, Oklahoma is bounded on the east by Arkansas and Missouri, on the north by Kansas, on the northwest by Colorado, on the far west by New Mexico, and on the south and near-west by Texas.
The state has four primary mountain ranges: the Arbuckle Mountains, the Wichita Mountains, the Ozark Mountains and the Ouachita Mountains. Part of the U.S. Interior Highlands region, the Ozarks and Ouachitas form the only major highland region between the Rocky Mountains and the Appalachians.
The geography of the state of Colorado is diverse, encompassing both rugged mountainous terrain, vast plains, desert lands, desert canyons, and mesas. The state of Colorado is defined as the geospherical rectangle that stretches from 37°N to 41°N latitude and from 102°03'W to 109°03'W longitude (25°W to 32°W from the Washington Meridian). Colorado is one of only three U.S. states (with Wyoming and Utah) that have only lines of latitude and longitude for boundaries.
The summit of Mount Elbert at 4401 meters (14,440 ft) elevation in Lake County is the state's highest point and the highest point in the entire Rocky Mountains. Colorado has approximately 550 mountain peaks that exceed 4000 meters (13,123 ft) elevation. Colorado is the only U.S. state that lies entirely above 1000 meters (3281 ft) elevation. The state's lowest elevation is 1010 meters (3315 ft) at the point on the eastern boundary of Yuma County where the Arikaree River flows into the state of Kansas.
The United States is a country in the Northern Hemisphere, Western Hemisphere, and the Eastern Hemisphere. It consists of forty-eight contiguous states in North America, Alaska, a peninsula which forms the northwestern most part of North America, and Hawaii, an archipelago in the Pacific Ocean. There are several United States territories in the Pacific and Caribbean. The term "United States", when used in the geographical sense, means the continental United States, Alaska, Hawaii, Puerto Rico, Guam, and the Virgin Islands of the United States. The country shares land borders with Canada and Mexico and maritime (water) borders with Russia, Cuba, and the Bahamas in addition to Canada and Mexico.
Lowest point: 560 feet
The Tulsa Metropolitan Area in the U.S. state of Oklahoma includes the city of Tulsa, Tulsa County, which extends also into Rogers County, Wagoner County, and Osage County within the larger Green Country region. The U.S. Census Bureau defines the metropolitan area (including Creek, Okmulgee, and Pawnee Counties) as the Tulsa Metropolitan area (Tulsa–Broken Arrow–Owasso), OK Metropolitan Statistical Area, with an estimated population of 960,480 (roughly 25 percent of Oklahoma's population) as of 2013, making it the 55th largest U.S.Metropolitan Statistical Area.
The Denver metropolitan area is a conurbation in the U.S. state of Colorado centered on the city of Denver. There are several formal and informal definitions for the metropolitan area, ranging from the continuously urbanized area within the six central counties of Adams, Arapahoe, Broomfield, Denver, Douglas and Jefferson]which?[ to the entire Front Range Urban Corridor that extends from Colorado Springs in the south to Fort Collins in the north.
The United States Office of Management and Budget has delineated the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area consisting of ten Colorado counties: the City and County of Denver, Arapahoe County, Jefferson County, Adams County, Douglas County, the City and County of Broomfield, Elbert County, Park County, Clear Creek County, and Gilpin County. The United States Census Bureau estimates that the population was 2,645,209 as of July 1, 2012, an increase of +4.00% since the 2010 United States Census, and ranking as the 21st most populous metropolitan statistical area of the United States.
Colorado Springs is a Home Rule Municipality that is the county seat and most populous city of El Paso County, Colorado, United States. Colorado Springs is located in the east central portion of the state. It is situated on Fountain Creek and is located 65 miles (105 km) south of the Colorado State Capitol in Denver. At 6,035 feet (1,839 m) the city stands over one mile (1.6 km) above sea level, though some areas of the city are significantly higher and lower. Colorado Springs is situated near the base of one of the most famous American mountains, Pikes Peak, rising over 8,000 feet above the city on the eastern edge of the Southern Rocky Mountains. The United States Air Force Academy is located in Colorado Springs. The city is often referred to as "The Springs."
The city had an estimated population of 431,834 in 2012., being the second most populous city in the state of Colorado, behind Denver, and the 41st most populous city in the United States, while the Colorado Springs Metropolitan Statistical Area had an estimated population of 668,353 in 2012. The city covers 194.7 square miles (504 km2), making it Colorado's largest city in area. Colorado Springs was selected as the No. 1 Best Big City in "Best Places to Live" by Money magazine in 2006, and placed number one in Outside's 2009 list of America's Best Cities.
Tulsa // is the second-largest city in the U.S. state of Oklahoma and 46th-largest city in the United States. With a population of 393,987 (2012 US Census estimate), it is the principal municipality of the Tulsa Metropolitan Area, a region with 951,880 residents in the MSA and 1,122,259 in the CSA. The city serves as the county seat of Tulsa County, the most densely populated county in Oklahoma, and extends into Osage, Rogers, and Wagoner counties.
Tulsa was first settled between 1828 and 1836 by the Lochapoka Band of Creek Native American tribe. For most of the 20th century, the city held the nickname "Oil Capital of the World" and played a major role as one of the most important hubs for the American oil industry. Tulsa, along with several other cities, claims to be the birthplace of U.S. Route 66 and is also known for its Western Swing music.