Illinois

Jersey

21,512
2020 population
1840
first census record
19
census records

About Jersey

Jersey, Illinois, first appears in the United States federal census in 1840, when it recorded a population of 4,535. At the most recent census, in 2020, its population stood at 21,512.

Its recorded population peaked at 22,985 in 2010, and has since declined by roughly 6 percent.

On the ground today, 21 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202021,512
201022,985
200021,668
199020,539
198020,538
197018,492
196017,023
195015,264
194013,636
193012,556
192012,682
191013,954
190014,612
189014,810
188015,542
187015,054
186012,051
18507,354
18404,535
Source

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

Historic places in Jersey

National Register of Historic Places listings in Jersey, Illinois.

Duncan Farm
Grafton
Fulkerson, Col. William H., Farmstead
Jerseyville
Elsah Historic District
Elsah
Ruebel Hotel
Grafton
Smith-Duncan, House and Eastman Barn
Grafton
Brainerd, Charles, House
Grafton
Principia College Historic District
Elsah
Slaten-LaMarsh House
Grafton
McClintock, John and Amelia, House
Grafton
Hamilton Primary School
Otterville
Nutwood Site
Nutwood
Jerseyville First Presbyterian Church
Jerseyville
Fisher-Chapman Farmstead
Jerseyville
Jersey County Courthouse
Jerseyville
Jerseyville Downtown Historic District
Jerseyville
Grafton Bank
Grafton
Grafton Historic District
Grafton
Mason, Paris, Building
Grafton
Browse all Illinoishistoric sites ›

Other counties in Illinois

Explore census history and historic records for more Illinois counties.

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Everything a full report reveals about Jersey County, Illinois

This page charts the census history of Jersey 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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Explore Illinois records

Illinoishistory ›NRHP historic sites ›Notable people from Illinois›

Frequently asked about Jersey

When does Jersey first appear in the US census?
Jersey, Illinois first appears in the federal census in 1840, with a recorded population of 4,535.
What is the population of Jersey?
At the most recent federal census (2020), Jersey had a recorded population of 21,512.
When did Jersey's population peak?
Jersey's recorded population peaked at 22,985 in 2010.
How many historic places are in Jersey?
21 sites are listed on the National Register of Historic Places in Jersey, Illinois.
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