Wisconsin

Washington

136,761
2020 population
1840
first census record
19
census records

About Washington

Washington, Wisconsin, first appears in the United States federal census in 1840, when it recorded a population of 343. At the most recent census, in 2020, its population stood at 136,761.

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

On the ground today, one documented military engagement has been recorded within the county, among them Wisconsin Draft Resistance — Washington County, and 32 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020136,761
2010131,887
2000117,493
199095,328
198084,848
197063,839
196046,119
195033,902
194028,430
193026,551
192025,713
191023,784
190023,589
189022,751
188023,442
187023,919
186023,622
185019,485
1840343
Source

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

Battles & engagements in Washington

Military engagements that took place in Washington, Wisconsin.

Wisconsin Draft Resistance — Washington County
1862

Historic places in Washington

National Register of Historic Places listings in Washington, Wisconsin.

Holy Hill
Erin
West Bend Chicago and North Western Depot
West Bend
Washington County Courthouse and Jail
West Bend
St. Peter's Church
West Bend
St. John of God Roman Catholic Church, Convent, and School
Kewaskum
St. Augustine Catholic Church and Cemetery
Trenton
Washington County "Island" Effigy Mound District
West Bend
Gadow's Mill
West Bend
Browse all Wisconsinhistoric sites ›

Other counties in Wisconsin

Explore census history and historic records for more Wisconsin counties.

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Everything a full report reveals about Washington County, Wisconsin

This page charts the census history of Washington County, Wisconsin. 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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Wisconsinhistory ›NRHP historic sites ›Notable people from Wisconsin›

Frequently asked about Washington

When does Washington first appear in the US census?
Washington, Wisconsin first appears in the federal census in 1840, with a recorded population of 343.
What is the population of Washington?
At the most recent federal census (2020), Washington had a recorded population of 136,761.
Were any battles fought in Washington?
1 documented military engagement took place in Washington, including Wisconsin Draft Resistance — Washington County.
How many historic places are in Washington?
32 sites are listed on the National Register of Historic Places in Washington, Wisconsin.
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