Missouri

Cass

107,824
2020 population
1840
first census record
19
census records

About Cass

Cass, Missouri, first appears in the United States federal census in 1840, when it recorded a population of 4,693. At the most recent census, in 2020, its population stood at 107,824.

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

On the ground today, 9 documented military engagements have been recorded within the county, among them Jayhawker Raid on Harrisonville, Quantrill Raid on Cass County (Feb 1862), Younger Brothers Join Quantrill (1862), and 7 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020107,824
201099,478
200082,092
199063,808
198051,029
197039,448
196029,702
195019,325
194019,534
193020,962
192021,536
191022,973
190023,636
189023,301
188022,431
187019,296
18609,794
18506,090
18404,693
Source

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

Battles & engagements in Cass

Military engagements that took place in Cass, Missouri.

Jayhawker Raid on Harrisonville
1861
Quantrill Raid on Cass County (Feb 1862)
1862
Younger Brothers Join Quantrill (1862)
1862
Battle of Morristown (Dayton), Missouri
1862
Harrisonville Skirmish
1862
Jayhawker Raid on Morristown, Missouri
1863
Order No. 11 Depopulation of Border Counties
1863
Younger Brothers – Raid on Harrisonville Area (1863)
1863
Skirmish at Morristown (Second), Missouri
1864

Historic places in Cass

National Register of Historic Places listings in Cass, Missouri.

Stumbaugh Post No. 180 GAR Hall
Austin
O'Bannon Homestead
Garden City
Pleasant Hill Downtown Historic District
Pleasant Hill
Watkins Family Farm Historic District
Raymore
Harrisonville Courthouse Square Historic District
Harrisonville
Browse all Missourihistoric sites ›

Other counties in Missouri

Explore census history and historic records for more Missouri counties.

RallsRandolphRayReynoldsRipleySalineSchuylerScotlandScottShannonShelbySt. CharlesSt. ClairSt. FrancoisSt. LouisSt. Louis citySte. GenevieveStoddardStoneSullivan
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Everything a full report reveals about Cass County, Missouri

This page charts the census history of Cass 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 Cass

When does Cass first appear in the US census?
Cass, Missouri first appears in the federal census in 1840, with a recorded population of 4,693.
What is the population of Cass?
At the most recent federal census (2020), Cass had a recorded population of 107,824.
Were any battles fought in Cass?
9 documented military engagements took place in Cass, including Jayhawker Raid on Harrisonville, Quantrill Raid on Cass County (Feb 1862), Younger Brothers Join Quantrill (1862).
How many historic places are in Cass?
7 sites are listed on the National Register of Historic Places in Cass, Missouri.
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