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Mar 9, 2022 · Ohio County Creation Dates and Parent Counties. See an interactive outline map of Ohio Historical Boundary Changes at Newberry Library site. [1] Select a year and the map will display the historical county boundaries. Click on map image for county details.
Counties of Ohio. There are 88 counties in the U.S. state of Ohio. Nine of them existed at the time of the Ohio Constitutional Convention in 1802. A tenth county, Wayne, was established on August 15, 1796, and encompassed roughly the present state of Michigan.
This Interactive Map of Ohio Counties show the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from the creation of the Ohio territory in 1788 to 1888.
Maps and text covering the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from the creation of the first county through December 31, 2000. For help with the interactive maps, see our Using the Atlas page. View Index of Counties and Equivalents.
The Continental Congress created the Northwest Territory on 13 Jul 1787. 1788: First organized European settlement in the Northwest Territory at Marietta (Washington Co., OH). Washington Co. formed as first county in the Northwest Territory (included most of what would become eastern and southeastern Ohio). 1790
Boundary Changes of Ohio Counties from 1788-1888. This Interactive Map of Ohio Counties show the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from 1788 to 1888.
Nov 24, 2023 · Interactive Map of Ohio County Formation History. (Ohio maps made with the use AniMap Plus 3.0 & with the Permission of the Goldbug Company) List Of Every Ohio County. Adams County was established on July 10, 1797, and its county seat is West Union. The county was named after John Adams, the second president of the United States.
