Colorado

Weld

328,981
2020 population
1870
first census record
16
census records

About Weld

Weld, Colorado, first appears in the United States federal census in 1870, when it recorded a population of 1,636. At the most recent census, in 2020, its population stood at 328,981.

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

On the ground today, 3 documented military engagements have been recorded within the county, among them Battle of Summit Springs Sub-action – Captive Recovery, Battle of Summit Springs 1864, Battle of Summit Springs, and 41 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020328,981
2010252,825
2000180,936
1990131,821
1980123,438
197089,297
196072,344
195067,504
194063,747
193065,097
192054,059
191039,177
190016,808
189011,736
18805,646
18701,636
Source

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

Battles & engagements in Weld

Military engagements that took place in Weld, Colorado.

Battle of Summit Springs Sub-action – Captive Recovery
1869
Battle of Summit Springs 1864
1869
Battle of Summit Springs
1869

Historic places in Weld

National Register of Historic Places listings in Weld, Colorado.

Nettleton-Mead House
Greeley
Daniels School
Milliken
Jurgens Site
Kersey
Fort Vasquez
Platteville
Anderson Barn
Johnstown
Greeley Masonic Temple
Greeley
Weld County Courthouse
Greeley
Brush, Jared L., Barn
Johnstown
Alger, Amanda K., Memorial Methodist Episcopal Church
Eaton
Little Thompson River Bridge
Berthoud
Von Trotha-Firestien Farm at Bracewell
Greeley
United Church of Christ of Highlandlake
Mead
SLW Ranch
Greeley
Greeley Union Pacific Railroad Depot
Greeley
Dearfield (Additional Documentation)
Wiggins
Meeker Memorial Museum
Greeley
Greeley Tribune Building
Greeley
Clubhouse-Student Union
Greeley
Browse all Coloradohistoric sites ›

Other counties in Colorado

Explore census history and historic records for more Colorado counties.

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Everything a full report reveals about Weld County, Colorado

This page charts the census history of Weld County, Colorado. 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 Weld

When does Weld first appear in the US census?
Weld, Colorado first appears in the federal census in 1870, with a recorded population of 1,636.
What is the population of Weld?
At the most recent federal census (2020), Weld had a recorded population of 328,981.
Were any battles fought in Weld?
3 documented military engagements took place in Weld, including Battle of Summit Springs Sub-action – Captive Recovery, Battle of Summit Springs 1864, Battle of Summit Springs.
How many historic places are in Weld?
41 sites are listed on the National Register of Historic Places in Weld, Colorado.
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