A small part of the northern part of the region is within the Green River watershed. A small portion of the southern part of the metropolitan area, including most of Maury County, is within the drainage basin of the Tennessee River. The Cumberland River passes through central part of the region, and is served by several tributaries, including the Stones, Harpeth, Caney Fork, and Red rivers. Much of the metro area contains extremely fertile soils, and crops such as corn and tobacco are commonly grown in the more rural parts of the metropolitan area. Nashville is located in the northwestern corner of the basin, and most of Nashville's suburban growth has occurred to the south, southeast, east, and northeast of the city, due to the more level terrain of the basin. As a result, the region contains many caves, underground streams, and depressions, and sinkholes are a common problem in the region. The region is characterized by a combination of uneven rolling hills and relatively level plains, and is underlain with porous sedimentary bedrock such as limestone, sandstone, and shale, which form karst. Both of these physiographic provinces are part of the Interior Low Plateaus of the Interior Plains. Parts of the region extend onto the Highland Rim, an elevated plain which completely surrounds the Nashville Basin. Geologically, the metropolitan area covers most of the Nashville Basin, a geological dome. Both the geographical center and population center of Tennessee are found in Murfreesboro, the second-largest city in the metropolitan area. The Nashville metropolitan area is located in the central part of the state of Tennessee, entirely within the Grand Division of Middle Tennessee, as defined by state law.
2.3 Satellite cities or communities with more than 50,000 inhabitants.2.2 Principal cities or communities with over 75,000 inhabitants.Today, the metro area includes Davidson and 12 other counties. As surrounding counties increased in population and densities and in the number of their residents employed in Davidson County, the OMB added new counties to the MSA. The metropolitan statistical area was first designated in 1950 and initially included only Davidson County. The area is the 36th largest metropolitan area in the United States. The Office of Management and Budget defines the metro area for statistical use by the United States Census Bureau and other agencies. It is also the largest metropolitan area in Tennessee, in terms of land area. With a population of nearly 2 million, it is the most populous metropolitan area in Tennessee.
The Nashville metropolitan area (officially, the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area) is a metropolitan statistical area centered around Nashville, Tennessee, the capital and largest city in Tennessee, in the United States.
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