Ohio is a state located in the Midwest region of the United States. The state is limited to Michigan and Lake Erie to the north, Pennsylvania to the east, West Virginia and Kentucky to the south, and Indiana to the west. The state’s most common nickname is “Buckeye State” (Buckeye is a tree that covers practically all of its territory).
The Ohio region was under French rule until 1763, when it came to belong to England. After the independence of the United States in 1783, it was finally dominated by the Americans. Ohio was elevated to the status of State on March 1, 1803.
- Abbreviationfinder.org: Find major meanings of abbreviation OH including the most common definition – Ohio. Also see the list of other meanings in addition to Ohio.
- Countryaah.com: Provides ranking of top ten cities and towns in Ohio by population. Also includes alphabetical list of and profile of each city of Ohio.
The word “ohio” means “great waters” in the Iroquois language. Native Americans used this word to refer to the Ohio River, which to this day is of great importance. The state has a temperate and very unstable climate, with average temperatures of 21ºC in the summer and -5ºC in the winter.
The biggest source of income for the state is the manufacturing industry; Ohio is one of the most industrialized states in the United States. The main products manufactured in it are transport equipment, machinery, tires and chemicals. Other important sectors are agriculture, mainly the production of corn and soybeans, and the provision of financial, real estate and government services.
Ohio is known for the fact that many pioneers and scientists are native to the state, such as Thomas Edison, inventor of the lamp; the Wright Brothers, pioneers in aviation; and Neil A. Armstrong, first person to set foot on the Moon.
Map of Area Codes in Ohio
Ohio consists of the following area codes. Click on the area code to show the cities in that area code.
Ohio Area Codes by County
The area code of 216 is used in the following 1 counties:
- Cuyahoga, OH
The area code of 220 is used in the following 16 counties:
- Belmont, OH
- Coshocton, OH
- Fairfield, OH
- Franklin, OH
- Gallia, OH
- Guernsey, OH
- Harrison, OH
- Jackson, OH
- Jefferson, OH
- Lawrence, OH
- Licking, OH
- Morgan, OH
- Muskingum, OH
- Noble, OH
- Scioto, OH
- Washington, OH
The area code of 234 is used in the following 11 counties:
- Carroll, OH
- Columbiana, OH
- Holmes, OH
- Mahoning, OH
- Medina, OH
- Portage, OH
- Stark, OH
- Summit, OH
- Trumbull, OH
- Tuscarawas, OH
- Wayne, OH
The area code of 326 is used in the following 9 counties:
- Adams, OH
- Brown, OH
- Clark, OH
- Greene, OH
- Hardin, OH
- Logan, OH
- Miami, OH
- Montgomery, OH
- Preble, OH
The area code of 330 is used in the following 12 counties:
- Carroll, OH
- Columbiana, OH
- Holmes, OH
- Jefferson, OH
- Mahoning, OH
- Medina, OH
- Portage, OH
- Stark, OH
- Summit, OH
- Trumbull, OH
- Tuscarawas, OH
- Wayne, OH
The area code of 380 is used in the following 5 counties:
- Delaware, OH
- Fairfield, OH
- Franklin, OH
- Madison, OH
- Pickaway, OH
The area code of 419 is used in the following 28 counties:
- Allen, OH
- Ashland, OH
- Auglaize, OH
- Crawford, OH
- Darke, OH
- Defiance, OH
- Erie, OH
- Fulton, OH
- Hancock, OH
- Hardin, OH
- Henry, OH
- Huron, OH
- Knox, OH
- Lucas, OH
- Marion, OH
- Mercer, OH
- Morrow, OH
- Ottawa, OH
- Paulding, OH
- Putnam, OH
- Richland, OH
- Sandusky, OH
- Seneca, OH
- Van Wert, OH
- Wayne, OH
- Williams, OH
- Wood, OH
- Wyandot, OH
The area code of 440 is used in the following 10 counties:
- Ashtabula, OH
- Cuyahoga, OH
- Erie, OH
- Geauga, OH
- Huron, OH
- Lake, OH
- Lorain, OH
- Medina, OH
- Portage, OH
- Trumbull, OH
The area code of 513 is used in the following 6 counties:
- Brown, OH
- Butler, OH
- Clermont, OH
- Hamilton, OH
- Preble, OH
- Warren, OH
The area code of 567 is used in the following 29 counties:
- Allen, OH
- Ashland, OH
- Auglaize, OH
- Crawford, OH
- Darke, OH
- Defiance, OH
- Erie, OH
- Fulton, OH
- Hancock, OH
- Hardin, OH
- Henry, OH
- Holmes, OH
- Huron, OH
- Knox, OH
- Lucas, OH
- Marion, OH
- Mercer, OH
- Morrow, OH
- Ottawa, OH
- Paulding, OH
- Putnam, OH
- Richland, OH
- Sandusky, OH
- Seneca, OH
- Van Wert, OH
- Wayne, OH
- Williams, OH
- Wood, OH
- Wyandot, OH
The area code of 614 is used in the following 5 counties:
- Delaware, OH
- Fairfield, OH
- Franklin, OH
- Madison, OH
- Pickaway, OH
The area code of 740 is used in the following 36 counties:
- Athens, OH
- Belmont, OH
- Clinton, OH
- Coshocton, OH
- Delaware, OH
- Fairfield, OH
- Fayette, OH
- Franklin, OH
- Gallia, OH
- Greene, OH
- Guernsey, OH
- Harrison, OH
- Hocking, OH
- Jackson, OH
- Jefferson, OH
- Knox, OH
- Lawrence, OH
- Licking, OH
- Madison, OH
- Marion, OH
- Meigs, OH
- Monroe, OH
- Morgan, OH
- Muskingum, OH
- Noble, OH
- Perry, OH
- Pickaway, OH
- Pike, OH
- Richland, OH
- Ross, OH
- Scioto, OH
- Tuscarawas, OH
- Union, OH
- Vinton, OH
- Washington, OH
- Wyandot, OH
The area code of 937 is used in the following 24 counties:
- Adams, OH
- Brown, OH
- Butler, OH
- Champaign, OH
- Clark, OH
- Clermont, OH
- Clinton, OH
- Darke, OH
- Delaware, OH
- Fayette, OH
- Greene, OH
- Hardin, OH
- Highland, OH
- Logan, OH
- Madison, OH
- Miami, OH
- Montgomery, OH
- Pike, OH
- Preble, OH
- Ross, OH
- Scioto, OH
- Shelby, OH
- Union, OH
- Warren, OH