Iowa

Linn

230,299
2020 population
1840
first census record
19
census records

About Linn

Linn, Iowa, first appears in the United States federal census in 1840, when it recorded a population of 1,373. At the most recent census, in 2020, its population stood at 230,299.

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

On the ground today, 127 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020230,299
2010211,226
2000191,701
1990168,767
1980169,775
1970163,213
1960136,899
1950104,274
194089,142
193082,336
192074,004
191060,720
190055,392
189045,303
188037,237
187031,080
186018,947
18505,444
18401,373
Source

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

Historic places in Linn

National Register of Historic Places listings in Linn, Iowa.

Chain Lakes Bridge
Hiawatha
Smith, James J. and Anna J. (Linean), House #2
Mount Vernon
People's Savings Bank
Cedar Rapids
Iowa Building
Cedar Rapids
Consistory Building No. 2
Cedar Rapids
Grant Vocational High School
Cedar Rapids
Torrance House
Lisbon
C.S.P.S. Hall
Cedar Rapids
First Presbyterian Church of Marion, Iowa
Marion
West, Wesley, House
Mount Vernon
Stuckslager, Harrison, House
Lisbon
Lesinger Block
Cedar Rapids
Upper Paris Bridge
Coggin
Witwer Grocery Company Building
Cedar Rapids
WCF & N Center Point Depot and Substation
Center Point
McCartney, James H. and Mayetta (Degrush), House
Mount Vernon
IANR Railroad Underpass
Cedar Rapids
First Avenue Bridge
Cedar Rapids
Sinclair, Caroline, Mansion (Additional Documentation)
Cedar Rapids
Evans Manufacturing Company Building
Cedar Rapids
Coggon Commercial Historic District
Coggon
Granger House
Marion
Bever Woods Historic District
Cedar Rapids
Bertram Bridge
Bertram
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Everything a full report reveals about Linn County, Iowa

This page charts the census history of Linn County, Iowa. 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 Linn

When does Linn first appear in the US census?
Linn, Iowa first appears in the federal census in 1840, with a recorded population of 1,373.
What is the population of Linn?
At the most recent federal census (2020), Linn had a recorded population of 230,299.
How many historic places are in Linn?
127 sites are listed on the National Register of Historic Places in Linn, Iowa.
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