Missouri

Clark

6,634
2020 population
1840
first census record
19
census records

About Clark

Clark, Missouri, first appears in the United States federal census in 1840, when it recorded a population of 2,846. At the most recent census, in 2020, its population stood at 6,634.

Its recorded population peaked at 15,383 in 1900, and has since declined by roughly 57 percent.

On the ground today, 11 documented military engagements have been recorded within the county, among them Battle of Athens, Iowa — Battle of Athens Missouri (Iowa Troops Action), Battle of Athens Missouri — Iowa Troops, and 5 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
20206,634
20107,139
20007,416
19907,547
19808,493
19708,260
19608,725
19509,003
194010,166
193010,254
192011,874
191012,811
190015,383
189015,126
188015,031
187013,667
186011,684
18505,527
18402,846
Source

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

Battles & engagements in Clark

Military engagements that took place in Clark, Missouri.

Battle of Athens
1861
Iowa — Battle of Athens Missouri (Iowa Troops Action)
1861
Battle of Athens Missouri — Iowa Troops
1861
Iowa — Croton Iowa Skirmish
1861
Battle of Athens (Missouri 1861)
1861
Battle of Yellow Creek (Wyaconda), Missouri
1861
Battle of Athens, Missouri
1861
Battle of Athens (Missouri)
1861
Skirmish at Yellow Creek
1862
Clark County Skirmish
1862
Kahoka Skirmish (Clark County)
1862

Historic places in Clark

National Register of Historic Places listings in Clark, Missouri.

Sickles Tavern
Wayland
Browse all Missourihistoric sites ›

Other counties in Missouri

Explore census history and historic records for more Missouri counties.

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Everything a full report reveals about Clark County, Missouri

This page charts the census history of Clark County, Missouri. 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 Clark

When does Clark first appear in the US census?
Clark, Missouri first appears in the federal census in 1840, with a recorded population of 2,846.
What is the population of Clark?
At the most recent federal census (2020), Clark had a recorded population of 6,634.
When did Clark's population peak?
Clark's recorded population peaked at 15,383 in 1900.
Were any battles fought in Clark?
11 documented military engagements took place in Clark, including Battle of Athens, Iowa — Battle of Athens Missouri (Iowa Troops Action), Battle of Athens Missouri — Iowa Troops.
How many historic places are in Clark?
5 sites are listed on the National Register of Historic Places in Clark, Missouri.
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