Ohio

Clermont

208,601
2020 population
1810
first census record
22
census records

About Clermont

Clermont, Ohio, first appears in the United States federal census in 1810, when it recorded a population of 9,965. At the most recent census, in 2020, its population stood at 208,601.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 5 documented military engagements have been recorded within the county, among them Fort Ancient Madisonville Site Conflict, Fort Ancient Fortified Village – Turpin Site, Siege of Martin's Station (1780), and 28 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020208,601
2010197,363
2000177,977
1990150,187
1980128,483
197095,725
196080,530
195042,182
194034,109
193029,786
192028,291
191029,551
190031,610
189033,553
188036,713
187034,268
186033,034
185030,455
184023,106
183020,466
182015,820
18109,965
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Clermont

Military engagements that took place in Clermont, Ohio.

Fort Ancient Madisonville Site Conflict
1300
Fort Ancient Fortified Village – Turpin Site
1300
Siege of Martin's Station (1780)
1780
Morgan's Raid — Camp Dennison Ohio
1863
Morgan's Raid — Raid on Williamsburg Ohio
1863

Historic places in Clermont

National Register of Historic Places listings in Clermont, Ohio.

U.S. Grant Birthplace and Grant Commemorative Sites Historic District
Point Pleasant
Snead Mound
Neville
Devanney Site
Goshen
Clarke Farm Site
Point Pleasant
Pfarr Log House
Milford
Winter, William, Stone House
Mt. Olive
East Fork Site
Batavia
Bullskin Creek Site
Felicity
Bethel Methodist Church
Bantam
Gaskins-Malany House
Withamsville
Ferris Site
Neville
Stonelick Covered Bridge
Perintown
Gatch Site
Milford
Promont
Milford
Browse all Ohiohistoric sites ›

Other counties in Ohio

Explore census history and historic records for more Ohio counties.

AthensAuglaizeBelmontBrownButlerCarrollChampaignClarkClintonColumbianaCoshoctonCrawfordCuyahogaDarkeDefianceDelawareErieFairfieldFayetteFranklin
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Everything a full report reveals about Clermont County, Ohio

This page charts the census history of Clermont County, Ohio. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
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
The men who marched from here in the Civil War, named and traced where the record allows.
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
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
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
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Clermont

When does Clermont first appear in the US census?
Clermont, Ohio first appears in the federal census in 1810, with a recorded population of 9,965.
What is the population of Clermont?
At the most recent federal census (2020), Clermont had a recorded population of 208,601.
Were any battles fought in Clermont?
5 documented military engagements took place in Clermont, including Fort Ancient Madisonville Site Conflict, Fort Ancient Fortified Village – Turpin Site, Siege of Martin's Station (1780).
How many historic places are in Clermont?
28 sites are listed on the National Register of Historic Places in Clermont, Ohio.
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