Statehood 1803

Ohio

French explorers from Canada reached the Ohio River in the late 17th century, establishing French presence in the region known as the Ohio Country. Britain conquered the area from France in the French and Indian Wars, and the region served as part of the British Province of Quebec through the Revolutionary War. The United States gained the territory through the Treaty of Paris of 1783, and Congress established it as the Northwest Territory in 1787 through the Northwest Ordinance. Following American victory in the Northwest Indian Wars, Ohio was admitted to the Union as the 17th state on March 1, 1803.

Statehood
1803
Historic sites
4,282
Military engagements
331

Pre-contact era

Before European contact, Native Americans speaking Algonquin languages inhabited Ohio and the central midwestern United States for hundreds of years, until displaced by the Iroquois in the latter part of the 17th century. Other cultures not generally identified as 'Indians', including the Hopewell 'mound builders', preceded them. Human history in Ohio began a few millennia after formation of the Bering land bridge about 14,500 BCE.

Colonial history

French presence was primarily exploratory and commercial; by the mid-18th century a few American and French fur traders engaged historic Native American tribes in present-day Ohio in the fur trade. There were a handful of French colonial settlements remaining at the time of the Northwest Territory's creation.

Throughout the Revolutionary War, the region was part of the British Province of Quebec and the western theater of the war.

The Northwest Territory was the nation's first post-colonial organized incorporated territory. Conflicts between settlers and Native American inhabitants resulted in the Northwest Indian War, culminating in the Battle of Fallen Timbers in 1794 and the Treaty of Greenville in 1795, which opened the way for settlement particularly in southern and western Ohio. Connecticut retained a Western Reserve in the northeastern portion, which it sold to the Connecticut Land Company.

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The Land
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Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
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Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
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Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
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Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
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Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
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Explore Ohio records

4,282
National Register historic sites
National Register listings ›
331
Military engagements
Military history records ›
2
Civil War regiments
Union, Confederate, USCT ›
10
Indigenous groups
Heritage records ›
44
Notable figures
Born in Ohio
15
Colonial-era events
1492 to early statehood ›
3
Archaeological sites
Prehistoric sites ›
Ohio counties
Census population history ›
Sources

State history content adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License. Historic sites data: National Register of Historic Places, National Park Service (public domain).

About Ohio

When did Ohio become a state?
Ohio was admitted to the Union in 1803.
What European powers colonized Ohio?
The territory that became Ohio passed through several colonial periods. French presence was primarily exploratory and commercial; by the mid-18th century a few American and French fur traders engaged historic Native American tribes in present-day Ohio in the fur trade. There were a handful of French colonial settlements remaining at the time of the Northwest Territory's creation. Throughout the Revolutionary War, the region was part of the British Province of Quebec a
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