Iowa

Clarke

9,748
2020 population
1850
first census record
18
census records

About Clarke

Clarke, Iowa, first appears in the United States federal census in 1850, when it recorded a population of 79. At the most recent census, in 2020, its population stood at 9,748.

Its recorded population peaked at 12,440 in 1900, and has since declined by roughly 22 percent.

On the ground today, 8 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
20209,748
20109,286
20009,133
19908,287
19808,612
19707,581
19608,222
19509,369
194010,233
193010,384
192010,506
191010,736
190012,440
189011,332
188011,513
18708,735
18605,427
185079
Source

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

Historic places in Clarke

National Register of Historic Places listings in Clarke, Iowa.

Osceola Masonic Block
Osceola
Kyte, John and Mary Jane, Farmstead District
Weldon
Webster, Dickinson, House
Osceola
Chicago, Burlington and Quincy Depot
Osceola
Osceola Commercial Historic District
Osceola
Cowles, George H and Alice Spaulding, House
Osceola
Temple, Marcellus Luther and Julia Protzman, House
Osceola
Banta, J. V., House
Osceola

Other counties in Iowa

Explore census history and historic records for more Iowa counties.

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Everything a full report reveals about Clarke County, Iowa

This page charts the census history of Clarke 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 Clarke

When does Clarke first appear in the US census?
Clarke, Iowa first appears in the federal census in 1850, with a recorded population of 79.
What is the population of Clarke?
At the most recent federal census (2020), Clarke had a recorded population of 9,748.
When did Clarke's population peak?
Clarke's recorded population peaked at 12,440 in 1900.
How many historic places are in Clarke?
8 sites are listed on the National Register of Historic Places in Clarke, Iowa.
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