Iowa

Hamilton

15,039
2020 population
1860
first census record
17
census records

About Hamilton

Hamilton, Iowa, first appears in the United States federal census in 1860, when it recorded a population of 1,699. At the most recent census, in 2020, its population stood at 15,039.

Its recorded population peaked at 20,978 in 1930, and has since declined by roughly 28 percent.

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

Population by decade

Census YearPopulationChart
202015,039
201015,673
200016,438
199016,071
198017,862
197018,383
196020,032
195019,660
194019,922
193020,978
192019,531
191019,242
190019,514
189015,319
188011,252
18706,055
18601,699
Source

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

Historic places in Hamilton

National Register of Historic Places listings in Hamilton, Iowa.

Webster City Post Office
Webster City
Tremaine Bridge
Webster City
State Bank of Stratford
Stratford
Kendall Young Public Library
Webster City
Oakland, William, Round Barn
Blairsburg
Schultz Brothers Drug Store
Williams
Zitterell, William J. and Hattie J., House
Webster City
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Other counties in Iowa

Explore census history and historic records for more Iowa counties.

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Everything a full report reveals about Hamilton County, Iowa

This page charts the census history of Hamilton 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 Hamilton

When does Hamilton first appear in the US census?
Hamilton, Iowa first appears in the federal census in 1860, with a recorded population of 1,699.
What is the population of Hamilton?
At the most recent federal census (2020), Hamilton had a recorded population of 15,039.
When did Hamilton's population peak?
Hamilton's recorded population peaked at 20,978 in 1930.
How many historic places are in Hamilton?
8 sites are listed on the National Register of Historic Places in Hamilton, Iowa.
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