Illinois

Carroll

15,702
2020 population
1840
first census record
19
census records

About Carroll

Carroll, Illinois, first appears in the United States federal census in 1840, when it recorded a population of 1,023. At the most recent census, in 2020, its population stood at 15,702.

Its recorded population peaked at 19,507 in 1960, and has since declined by roughly 20 percent.

On the ground today, 2 documented military engagements have been recorded within the county, among them Skirmish at Prophetstown / Black Hawk at the Prophet's Village, Kellogg's Grove Battles (Black Hawk War 1832), and 6 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202015,702
201015,387
200016,674
199016,805
198018,779
197019,276
196019,507
195018,976
194017,987
193018,433
192019,345
191018,035
190018,963
189018,320
188016,976
187016,705
186011,733
18504,586
18401,023
Source

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

Battles & engagements in Carroll

Military engagements that took place in Carroll, Illinois.

Skirmish at Prophetstown / Black Hawk at the Prophet's Village
1832
Kellogg's Grove Battles (Black Hawk War 1832)
1832

Historic places in Carroll

National Register of Historic Places listings in Carroll, Illinois.

Steffens, Joseph, House
Milledgeville
Franks, Charles, House
Lanark
Carroll County Courthouse
Mount Carroll
Mount Carroll Historic District
Mount Carroll
Halderman, Nathaniel, House
Mount Carroll
Mark, Caroline, House
Mount Carroll

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Everything a full report reveals about Carroll County, Illinois

This page charts the census history of Carroll County, Illinois. 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 Carroll

When does Carroll first appear in the US census?
Carroll, Illinois first appears in the federal census in 1840, with a recorded population of 1,023.
What is the population of Carroll?
At the most recent federal census (2020), Carroll had a recorded population of 15,702.
When did Carroll's population peak?
Carroll's recorded population peaked at 19,507 in 1960.
Were any battles fought in Carroll?
2 documented military engagements took place in Carroll, including Skirmish at Prophetstown / Black Hawk at the Prophet's Village, Kellogg's Grove Battles (Black Hawk War 1832).
How many historic places are in Carroll?
6 sites are listed on the National Register of Historic Places in Carroll, Illinois.
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