Iowa

Keokuk

10,033
2020 population
1850
first census record
18
census records

About Keokuk

Keokuk, Iowa, first appears in the United States federal census in 1850, when it recorded a population of 4,822. At the most recent census, in 2020, its population stood at 10,033.

Its recorded population peaked at 24,979 in 1900, and has since declined by roughly 60 percent.

On the ground today, 11 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202010,033
201010,511
200011,400
199011,624
198012,921
197013,943
196015,492
195016,797
194018,406
193019,148
192020,983
191021,160
190024,979
189023,862
188021,258
187019,434
186013,271
18504,822
Source

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

Historic places in Keokuk

National Register of Historic Places listings in Keokuk, Iowa.

Masonic Opera House
What Cheer
Lancaster School
Sigourney
Singmaster, C.F. and Mary, House
Keota
Public Square Historic District
Sigourney
Saints Peter and Paul Roman Catholic Church Historic District (Additional Documentation)
Harper
Ramsey Building
Keota
White, Theodore, House
South English
Sigourney Public Library
Sigourney
Keokuk County Courthouse
Sigourney
Bruce Goldfish Fisheries
Thornburg
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Everything a full report reveals about Keokuk County, Iowa

This page charts the census history of Keokuk 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 Keokuk

When does Keokuk first appear in the US census?
Keokuk, Iowa first appears in the federal census in 1850, with a recorded population of 4,822.
What is the population of Keokuk?
At the most recent federal census (2020), Keokuk had a recorded population of 10,033.
When did Keokuk's population peak?
Keokuk's recorded population peaked at 24,979 in 1900.
How many historic places are in Keokuk?
11 sites are listed on the National Register of Historic Places in Keokuk, Iowa.
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