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Area of Oklahoma, USA

Green Country, sometimes referred to as Northeast Oklahoma, is the northeastern portion of the U. S. state of Oklahoma, which lies west of the northern half of Arkansas, the southwestern corner the way of Missouri, and south of Kansas.

While the name's usage can be traced to the early part of the 20th century, it was popularized in the 1960s by the Oklahoma Department of Tourism and Recreation as one of six travel destination regions within the state. Said tourism designation is an 18 county region including Pawnee, Osage, Washington, Nowata, Craig, Ottawa, Delaware, Mayes, Rogers, Creek, Tulsa, Wagoner, Cherokee, Adair, Sequoyah, Muskogee, Okmulgee, and McIntosh counties. Another alternate usage of the term can include solely the immediate vicinity of Green Country's principal city, Tulsa; the Tulsa Metropolitan Area or the city of Tulsa proper is often referred to as "Green Country" in its own right. In this case, the terms "Tulsa Metropolitan Area" and "Green Country" are used interchangeably. Average precipitation totals in Green Country are generally above 40 inches per year. The area is also one of the most populous regions of Oklahoma, and is home to some of its largest cities.

Northeastern Oklahoma has the state's second largest city, Tulsa. In addition to the area's foliage and rolling hills, it has more lakes than any other geographical area of Oklahoma, as well as more than half of the state's registered state parks. Oklahoma is one of only four states with more than 10 ecoregions, but six of its 11 ecoregions are located in northeastern Oklahoma. Intercity bus service is provided by Greyhound Lines and Jefferson Lines. Within the Tulsa metro, Tulsa Transit provides local service. The area's highway system is dominated by turnpikes. Toll roads account for the primary highways in and out of the city of Tulsa in almost every direction. The Will Rogers Turnpike serves the city to the northeast, the Turner Turnpike to the southwest, the Cimarron Turnpike to the west, The Muskogee Turnpike to the southeast, and the Cherokee Turnpike to the east. Interstate 44 is the primary thoroughfare, and runs diagonally through Green Country, exiting on the southwest and northeast corners. All portions of the road through northeastern Oklahoma exists as a toll road, except for in the city of Tulsa. Interstate 40 straddles the southernmost border of Green Country, while other highways include the north south Highway 75 (not a turnpike), The Muskogee Turnpike, the north south Highway 69, Highway 169, and the east west Highway 412. In addition, Historic U. S. Route 66 runs (with breaks) between the Kansas line and Stroud, the southwesternmost town in the region.