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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.
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.
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.
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.
Nov 6, 2009 · The first state formed in the Northwest Territory was Ohio in 1803. The 1810 Census of Ohio was lost, except for Washington County. The last new county formed in Ohio was Noble County in 1851. The boundaries of Ohio's 88 counties did not stabilize until 1888. Timeline Map.
Continental Congress at York, Pennsylvania and York County in the Revolution, Extracted from the author's History of York County, Pennsylvania, Chicago, 1907. Also available in digital form.
The history of Ohio as a state began when the Northwest Territory was divided in 1800, and the remainder reorganized for admission to the union on March 1, 1803, as the 17th state of the United States.
