Iowa

Carroll

20,760
2020 population
1860
first census record
17
census records

About Carroll

Carroll, Iowa, first appears in the United States federal census in 1860, when it recorded a population of 281. At the most recent census, in 2020, its population stood at 20,760.

Its recorded population peaked at 23,431 in 1960, and has since declined by roughly 11 percent.

On the ground today, 18 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202020,760
201020,816
200021,421
199021,423
198022,951
197022,912
196023,431
195023,065
194022,770
193022,326
192021,549
191020,117
190020,319
189018,828
188012,351
18702,451
1860281
Source

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

Historic places in Carroll

National Register of Historic Places listings in Carroll, Iowa.

Storm Creek Bridge
Carroll
Leet, William A., and Frederick Hassler Farmstead District
Manning
Quail Avenue Bridge
Carroll
Carroll City-Mount Olivet Cemetery
Carroll
Robin Avenue Bridge
Carroll
Olympic Avenue Bridge
Carroll
Kittyhawk Avenue Bridge
Carroll
Fobes Octagon Barn
Lanesboro
Carnegie Library Building
Carroll
Storm Creek Bridge 2
Carroll
Armour Creameries Poultry House
Coon Rapids
Manning Water Tower
Manning
Manning Commercial Historic District
Manning
American Express Building-Carroll
Carroll
Chicago & Northwestern Passenger Depot and Baggage Room-Carroll
Carroll
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Everything a full report reveals about Carroll County, Iowa

This page charts the census history of Carroll 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 Carroll

When does Carroll first appear in the US census?
Carroll, Iowa first appears in the federal census in 1860, with a recorded population of 281.
What is the population of Carroll?
At the most recent federal census (2020), Carroll had a recorded population of 20,760.
When did Carroll's population peak?
Carroll's recorded population peaked at 23,431 in 1960.
How many historic places are in Carroll?
18 sites are listed on the National Register of Historic Places in Carroll, Iowa.
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