Illinois

Calhoun

4,437
2020 population
1830
first census record
20
census records

About Calhoun

Calhoun, Illinois, first appears in the United States federal census in 1830, when it recorded a population of 1,090. At the most recent census, in 2020, its population stood at 4,437.

Its recorded population peaked at 8,917 in 1900, and has since declined by roughly 50 percent.

On the ground today, 6 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
20204,437
20105,089
20005,084
19905,322
19805,867
19705,675
19605,933
19506,898
19408,207
19308,034
19208,245
19108,610
19008,917
18907,652
18807,467
18706,562
18605,144
18503,231
18401,741
18301,090
Source

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

Historic places in Calhoun

National Register of Historic Places listings in Calhoun, Illinois.

Schudel No. 2 Site
Hamburg
Brussels Historic District
Brussels
Kamp Mound Site
Kampsville
Kamp Store
Kampsville
Golden Eagle-Toppmeyer Site
Brussels
Klunk, Michael, Farmstead
Michael

Other counties in Illinois

Explore census history and historic records for more Illinois counties.

KankakeeKendallKnoxLa SalleLakeLaSalleLawrenceLeeLivingstonLoganMaconMacoupinMadisonMarionMarshallMasonMassacMcDonoughMcHenryMcLean
Unlimited access

Everything a full report reveals about Calhoun County, Illinois

This page charts the census history of Calhoun 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.
First month just $5.99, then $11.99 a month. Unlimited locations, cancel anytime.

Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.

Start your Calhoun County, Illinois report
Or see a real report first

Explore Illinois records

Illinoishistory ›NRHP historic sites ›Notable people from Illinois›

Frequently asked about Calhoun

When does Calhoun first appear in the US census?
Calhoun, Illinois first appears in the federal census in 1830, with a recorded population of 1,090.
What is the population of Calhoun?
At the most recent federal census (2020), Calhoun had a recorded population of 4,437.
When did Calhoun's population peak?
Calhoun's recorded population peaked at 8,917 in 1900.
How many historic places are in Calhoun?
6 sites are listed on the National Register of Historic Places in Calhoun, Illinois.
Aubrey Research

Research the history of any US location

Aubrey searches federal archives, archaeological records, historic registers, and primary sources to build a full historical report for any address or place in the United States.

Research your locationView a free sample report