Cincinnati–Northern Kentucky metropolitan area
| Greater Cincinnati | |
|---|---|
| Cincinnati, OH-KY-IN Metropolitan Statistical Area | |
 |
|
| Coordinates: 39°00′N 84°30′W / 39°N 84.5°W | |
| Country | United States |
| State(s) |
Ohio Kentucky Indiana |
| Largest city | Cincinnati |
| Other cities | Hamilton, Ohio, Middletown, Ohio, Mason, Ohio |
| Area | |
| • Total | 4,808 sq mi (12,450 km2) |
| Highest elevation | 1,089 ft (332 m) |
| Lowest elevation | 455 ft (139 m) |
| Population | |
| • Total | 2,137,406 |
| • Rank | 28th in the U.S. |
| • Density | 445/sq mi (172/km2) |
The Cincinnati metropolitan area, informally known as Greater Cincinnati, is a metropolitan area that includes counties in the U.S. states of Ohio, Kentucky, and Indiana around the Ohio city of Cincinnati. The United States Census Bureau's formal name for the area is the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area. As of the 2010 U.S. Census, this MSA had a population of 2,114,580, the largest metropolitan area involving Ohio and 27th largest in the United States.
The Census also lists the Cincinnati-Wilmington-Maysville, OH-KY-IN Combined Statistical Area, which adds Clinton County, Ohio (defined as the Wilmington, OH micropolitan area) and Mason County, Kentucky (defined as the Maysville, KY micropolitan area) for a 2014 estimated population of 2,208,450.
The Cincinnati metropolitan area is considered part of the Great Lakes Megalopolis.
The Cincinnati, OH-KY-IN, MSA was originally formed by the United States Census Bureau in 1950 and consisted of the Kentucky counties of Campbell and Kenton and the Ohio county of Hamilton. As surrounding counties saw an increase in their population densities and the number of their residents employed within Hamilton County, they met Census criteria to be added to the MSA. The Hamilton-Middletown, OH MSA was also formed in 1950 and consisted solely of Butler County, Ohio.
In 1990, the Census changed designation of the areas known as MSAs to Primary Metropolitan Statistical Area (PMSA), and a new Consolidated Metropolitan Statistical Area (CMSA) grouping was created. From 1990 through 2005, the Cincinnati-Hamilton-Middletown CMSA included the Cincinnati-Hamilton, OH-KY-IN PMSA and the Hamilton-Middletown, OH PMSA.
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