Washington

Kittitas

44,337
2020 population
1890
first census record
14
census records

About Kittitas

Kittitas, Washington, first appears in the United States federal census in 1890, when it recorded a population of 8,777. At the most recent census, in 2020, its population stood at 44,337.

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

On the ground today, 24 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202044,337
201040,915
200033,362
199026,725
198024,877
197025,039
196020,467
195022,235
194020,230
193018,154
192017,737
191018,561
19009,704
18908,777
Source

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

Historic places in Kittitas

National Register of Historic Places listings in Kittitas, Washington.

Northwestern Improvement Company Store
Roslyn
Thorp Grade School
Thorp
Thorp Mill
Thorp
Olmstead Place State Park
Ellensburg
Chicago, Milwaukee, St. Paul and Pacific Railroad: South Cle Elum Yard
South Cle Elum
Milwaukee Road Bunkhouse
South Cle Elum
Chicago, Milwaukee, St. Paul & Pacific Railroad-Kittitas Depot
Kittitas
Cabin Creek Historic District
Easton
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Other counties in Washington

Explore census history and historic records for more Washington counties.

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Everything a full report reveals about Kittitas County, Washington

This page charts the census history of Kittitas County, Washington. 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 Kittitas

When does Kittitas first appear in the US census?
Kittitas, Washington first appears in the federal census in 1890, with a recorded population of 8,777.
What is the population of Kittitas?
At the most recent federal census (2020), Kittitas had a recorded population of 44,337.
How many historic places are in Kittitas?
24 sites are listed on the National Register of Historic Places in Kittitas, Washington.
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