Illinois

Grundy

52,533
2020 population
1850
first census record
18
census records

About Grundy

Grundy, Illinois, first appears in the United States federal census in 1850, when it recorded a population of 3,023. At the most recent census, in 2020, its population stood at 52,533.

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

On the ground today, one documented military engagement has been recorded within the county, among them Potawatomi Alliance Raids — Aux Sable Creek (June 1832), and 7 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202052,533
201050,063
200037,535
199032,337
198030,582
197026,535
196022,350
195019,217
194018,398
193018,678
192018,580
191024,162
190024,136
189021,024
188016,732
187014,938
186010,379
18503,023
Source

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

Battles & engagements in Grundy

Military engagements that took place in Grundy, Illinois.

Potawatomi Alliance Raids — Aux Sable Creek (June 1832)
1832

Historic places in Grundy

National Register of Historic Places listings in Grundy, Illinois.

Mazon Creek Fossil Beds
Morris
Morris Downtown Commercial Historic District
Morris
White and Company's Goose Lake Tile Works
Morris
Morris Wide Water Canal Boat Site
Morris
Coleman Hardware Company Building
Morris
Dresden Island Lock and Dam Historic District
Morris
White and Company's Goose Lake Stoneware Manufactury
Morris

Other counties in Illinois

Explore census history and historic records for more Illinois counties.

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Everything a full report reveals about Grundy County, Illinois

This page charts the census history of Grundy 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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Illinoishistory ›NRHP historic sites ›Notable people from Illinois›

Frequently asked about Grundy

When does Grundy first appear in the US census?
Grundy, Illinois first appears in the federal census in 1850, with a recorded population of 3,023.
What is the population of Grundy?
At the most recent federal census (2020), Grundy had a recorded population of 52,533.
Were any battles fought in Grundy?
1 documented military engagement took place in Grundy, including Potawatomi Alliance Raids — Aux Sable Creek (June 1832).
How many historic places are in Grundy?
7 sites are listed on the National Register of Historic Places in Grundy, Illinois.
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