Indiana

Knox

36,282
2020 population
1800
first census record
23
census records

About Knox

Knox, Indiana, first appears in the United States federal census in 1800, when it recorded a population of 2,517. At the most recent census, in 2020, its population stood at 36,282.

Its recorded population peaked at 46,195 in 1920, and has since declined by roughly 21 percent.

On the ground today, 6 documented military engagements have been recorded within the county, among them Capture of Vincennes (Clark), Battle of Vincennes Feb 23-25 1779, Battle of Fort Sackville (Vincennes), and 21 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202036,282
201038,440
200039,256
199039,884
198041,838
197041,546
196041,561
195043,415
194043,973
193043,813
192046,195
191039,183
190032,746
189028,044
188026,324
187021,562
186016,056
185011,084
184010,657
18306,525
18205,437
18107,945
18002,517
Source

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

Battles & engagements in Knox

Military engagements that took place in Knox, Indiana.

Capture of Vincennes (Clark)
1779
Battle of Vincennes Feb 23-25 1779
1779
Battle of Fort Sackville (Vincennes)
1779
Battle of Vincennes (Fort Sackville)
1779
Siege of Fort Sackville
1779
Raid on the Piankashaw Villages (1786)
1786

Historic places in Knox

National Register of Historic Places listings in Knox, Indiana.

Harrison, William Henry, Home (Grouseland)
Vincennes
Old Cathedral Complex
Vincennes
Territorial Capitol of Former Indiana Territory
Vincennes
Old State Bank
Vincennes
Vincennes Historic District
Vincennes
George Rogers Clark National Historical Park
Vincennes
Gregg Park
Vincennes
Fort Knox II Site
Vincennes
Kixmiller's Store
Freelandville
Shadowwood
Vincennes
Hack and Simon Office Building
Vincennes
Kimmell Park
Vincennes
Pyramid Mound (12k14)
Vincennes
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Other counties in Indiana

Explore census history and historic records for more Indiana counties.

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Everything a full report reveals about Knox County, Indiana

This page charts the census history of Knox County, Indiana. 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 Knox

When does Knox first appear in the US census?
Knox, Indiana first appears in the federal census in 1800, with a recorded population of 2,517.
What is the population of Knox?
At the most recent federal census (2020), Knox had a recorded population of 36,282.
When did Knox's population peak?
Knox's recorded population peaked at 46,195 in 1920.
Were any battles fought in Knox?
6 documented military engagements took place in Knox, including Capture of Vincennes (Clark), Battle of Vincennes Feb 23-25 1779, Battle of Fort Sackville (Vincennes).
How many historic places are in Knox?
21 sites are listed on the National Register of Historic Places in Knox, Indiana.
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