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Cincinnati-Northern Kentucky metropolitan area

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Title: Cincinnati-Northern Kentucky metropolitan area  
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Subject: Warren County, Ohio, Hamilton County, Ohio, Butler County, Ohio, Brown County, Ohio, Clermont County, Ohio, Campbell County, Kentucky, Boone County, Kentucky, Ohio County, Indiana, Dearborn County, Indiana, Midwestern United States
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Cincinnati-Northern Kentucky metropolitan area

The Cincinnati-Northern Kentucky 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 city of Cincinnati, Ohio. The United States Census's formal name for the area is the Cincinnati-Middletown Metropolitan Statistical Area. As of the 2010 U.S. Census, this MSA had a population of 2,130,151, the largest metropolitan area involving Ohio and 27th largest in the United States.[1]

The Census also lists the Cincinnati-Middletown-Wilmington Combined Statistical Area, which adds the Wilmington micropolitan area for a 2009 estimated population of 2,214,954.[2]

The Cincinnati–Northern Kentucky metropolitan area is considered part of the Great Lakes Megalopolis.

Census Designation History

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.

As of December 2005, Census terminology changed again, eliminating the PMSA/CMSA terminology. Consolidated Statistical Areas (CSA) combine more than one Core Based Statistical Area (CBSA). Newly defined MSAs (Metropolitan) and µSAs (Micropolitan) Statistical Areas are CBSAs. The Cincinnati-Middletown-Wilmington CSA includes the Cincinnati-Middletown MSA (defined as the old Cincinnati-Hamilton-Middletown CMSA), and Wilmington, OH USA (Clinton County, Ohio).

Population growth

The metropolitan area's population has grown 8.1 percent between Census 2000 and the 2009 Census population estimate, just under the national population growth rate of 9.2 percent over the same period. This growth rate is about in the middle of the growth rates of other similarly sized mid western metropolitan areas. For example, the Cleveland metropolitan area lost approximately 2% of population, while Louisville gained 8%, Columbus gained 12%, and Indianapolis gained 14% over the same time period.

The 2009 population estimate from the US Census classifies population changes between natural population increases (number of births minus number of deaths) and net migration (the difference between people moving into the region minus those moving out of the region). Natural population increase contributes fundamentally all of Greater Cincinnati's population growth. A small amount of net international migration to the region is offset by a small amount of net domestic migration out of the region.[3]

The Cincinnati-Middletown Metropolitan Statistical Area (the "MSA"), which includes seven counties in Northern Kentucky and three in Southeast Indiana, is considered the largest metropolitan area that includes parts of Ohio, exceeding the population of Greater Cleveland. However, the Cleveland-Elyria-Akron Combined Statistical Area (CSA), which includes the Akron, Ohio metropolitan area, remains larger than the Cincinnati-Middletown-Wilmington Combined Statistical Area.[4]

Most of the region's population growth in the region has occurred in the Northern counties, leading to speculation that the Cincinnati-Northern Kentucky metropolitan area will soon merge with Greater Dayton.[5] Combining the Cincinnati and Dayton Metropolitan Statistical Areas into a hypothetical Cincinnati-Dayton Combined Statisical Area yields a population of about 3.3 million people. The combined region would be ranked roughly 14th largest in the nation.

Statistical information

Statistical Area/County 2010 Census 2000 Census 1990 Census 1980 Census 1970 Census 1960 Census 1950 Census
Cincinnati-Middletown-Wilmington, OH-KY-IN CSA1 2,172,191 2,050,175 1,880,332 1,788,404 1,721,698 1,574,663 1,270,310
Cincinnati-Middletown, OH-KY-IN MSA1 2,130,151 2,009,632 1,844,917 1,753,801 1,690,234 1,544,659 1,244,738
Dearborn County, Indiana 50,047 46,109 38,835 34,291 29,430 28,674 25,141
Franklin County, Indiana 23,087 22,151 19,580 19,612 16,943 17,015 16,034
Ohio County, Indiana 6,128 5,623 5,315 5,114 4,289 4,165 4,223
Boone County, Kentucky 118,811 85,991 57,589 45,842 32,812 21,940 13,015
Bracken County, Kentucky 8,488 8,279 7,766 7,738 7,227 7,422 8,424
Campbell County, Kentucky 90,336 88,616 83,866 83,317 88,501 86,803 76,196
Gallatin County, Kentucky 8,589 7,870 5,393 4,842 4,134 3,867 3,969
Grant County, Kentucky 24,662 22,384 15,737 13,308 9,999 9,489 9,809
Kenton County, Kentucky 159,720 151,464 142,031 137,058 129,440 120,700 104,254
Pendleton County, Kentucky 14,877 14,390 12,036 10,989 9,949 9,968 9,610
Brown County, Ohio 44,846 42,285 34,966 31,920 26,635 25,178 22,221
Clermont County, Ohio 197,363 177,977 150,187 128,483 95,725 80,530 42,182
Hamilton County, Ohio 802,374 845,303 866,228 873,224 924,018 864,121 723,952
Warren County, Ohio 212,693 158,383 113,909 99,276 84,925 65,711 38,505
Butler County, Ohio2 368,130 332,807 291,479 258,787 226,207 199,076 147,203
Wilmington, OH µSA1 42,040 40,543 35,415 34,603 31,464 30,004 25,572
Clinton County, Ohio 42,040 40,543 35,415 34,603 31,464 30,004 25,572

1For comparison purposes, population data is summarized using 2008 Census CSA/MSA county definitions.
2Butler County, Ohio was previously known as the Hamilton- Middletown, OH PMSA and was separate from the Cincinnati, OH-KY-IN PMSA until the 1990 Census, when the Cincinnati- Hamilton, OH-KY-IN CMSA designation was used to consolidate the two PMSAs. The CMSA/PMSA designation is no longer used by the US Census.


Cincinnati-Middletown, OH-KY-IN MSA

These 15 counties have a total area of 4,465 square miles (11,560 km2).

Main cities

In order of 2010 census population:

Major highways and roads

  • Interstate 71
  • Interstate 74
  • Interstate 75
  • Interstate 275
  • Interstate 471
  • State Route 3 (Montgomery Road)
  • U.S. Route 27 (Colerain Avenue)
  • U.S. Route 42 (Reading Road, Lebanon Road)
  • U.S. Route 50 (Columbia Parkway, Ohio Pike)
  • U.S. Route 52 (Columbia Parkway, Kellogg Avenue)
  • U.S. Route 127 (Hamilton Avenue)
  • Ohio State Route 747 (Springfield Pike)
  • Norwood Lateral)
  • Ohio State Route 131
  • Ohio State Route 129 (Butler County Veterans Highway)
  • Ohio State Route 126 (Ronald Reagan Cross County Highway)
  • Ohio State Route 32
  • Ohio State Route 28
  • Dixie Highway)
  • Kentucky Route 17 (Madison Pike)
  • Kentucky Route 18 (Burlingtion Pike)
  • Kentucky Route 177 (Decoursey Pike)
  • Vine Street, Cincinnati

Universities, colleges, and technical schools




Area codes


The Cincinnati-Northern Kentucky metropolitan area is located within a climatic transition zone. The southern area of the region, from roughly about the Ohio River, is at the extreme northern limit of the microclimates of even cooler and warmer temperature may occur in the area but are too small to be considered in the overall climate zone rating. The common wall lizard, introduced from Italy in the 1950s, is an example of fauna in the area that lends a subtropical ambiance to the urban core (near downtown Cincinnati) area of the region.

Significant moderating variables for the overall climate are:

South and central- Ohio River, Licking River, relatively large hills and valleys, and a combined urban heat island effect due to the close proximity of the Cincinnati-Northern Kentucky cities of Covington, Newport, and Downtown Cincinnati

Suburban - large parking lots that take up the bulk of the land in Mason, West Chester, and Florence create a heat island effect.

North- Great Miami River, the area is situated on a glaciated flat plateau, the Miami Valley, and some urban heat island effect in the immediate area of downtown Dayton and Hamilton.

Traveling through the region from North to South, a subtle but interesting change in climate can be observed and is most evidenced by the gradual increase in the occurrence of subtropical indicator plants in the landscape (most noticeable are the Southern Magnolia and Mimosa trees, the needle palm also may be found as a winter hardy landscape specimen in yards near the Ohio River). Also, in the winter there is usually a significant difference in snowfall/ice/rain in the region going from north to south.

Although widely accepted as part of the Midwest, the Cincinnati-Northern Kentucky metropolitan area is climatically and geographically located on the northern periphery of the Upland South region of the United States and is within the Bluegrass region of Ohio and Kentucky.

The area is vulnerable to occasional severe weather - thunderstorms, large hail and sometimes tornadoes.


External links

  • Ohio Kentucky Indiana Regional Council of Governments
  • Cincinnati-Middletown-Wilmington, OH-KY-IN Combined Statistical Area (2003) map
  • U.S. Census Bureau State & County QuickFacts
  • U.S. Census Bureau population estimates
  • Metropolitan and Micropolitan Statistical Areas
  • About Metropolitan and Micropolitan Statistical Areas
  • Historical Metropolitan Area Definitions

Coordinates: 39°0′N 84°30′W / 39.000°N 84.500°W / 39.000; -84.500

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