Idaho
Idaho
16,541
2020 population
1870
first census record
16
census records
About Idaho
Idaho, Idaho, first appears in the United States federal census in 1870, when it recorded a population of 849. At the most recent census, in 2020, its population stood at 16,541.
The county's recorded population has risen across the decades to its highest level in 2020.
On the ground today, 40 documented military engagements have been recorded within the county, among them Cottonwood Skirmish No. 1 (Rains Fight), Cottonwood Skirmishes — Rains Fight (July 3, 1877), Nez Perce War — Salmon River Killings (June 13–14, 1877), and 43 places are listed on the National Register of Historic Places.
Population by decade
Source
Population data from the United States decennial census, U.S. Census Bureau (public domain).
Battles & engagements in Idaho
Military engagements that took place in Idaho, Idaho.
Cottonwood Skirmish No. 1 (Rains Fight)
1877
Cottonwood Skirmishes — Rains Fight (July 3, 1877)
1877
Nez Perce War — Salmon River Killings (June 13–14, 1877)
1877
Nez Perce War — Rains Fight
1877
Nez Perce — Camas Prairie Battle 1877
1877
Nez Perce War — White Bird Canyon
1877
Cottonwood Skirmishes
1877
Battle of the Clearwater – Howard's Artillery Position
1877
Nez Perce War — Kamiah Crossing
1877
Battle of Clearwater — Siege of Church Knoll (July 11, 1877)
1877
Clearwater Battle Nez Perce
1877
Battle of White Bird Canyon – Pursuit
1877
Battle of White Bird Canyon (Nez Perce)
1877
Battle of the Clearwater — Nez Perce War July 11-12 1877
1877
Clearwater Battle
1877
Battle of the Clearwater — WA Territory approach
1877
White Bird Canyon Battle (Main Engagement)
1877
Kamiah Crossing — Nez Perce Escape to Lolo Trail (July 13, 1877)
1877
Battle of White Bird Canyon – Ravine Approach
1877
Battle of Kamiah — Nez Perce (July 13, 1877)
1877
Nez Perce War – Salmon River Crossings
1877
Nez Perce War – Horseshoe Bend Skirmish
1877
Nez Perce War – White Bird Canyon Pursuit
1877
Nez Perce War — Looking Glass Village Attack
1877
Battle of Clearwater (Nez Perce)
1877
White Bird Canyon Battle (Advance Skirmish)
1877
Clearwater Battle — Nez Perce War 1877
1877
Nez Perce War – Battle at Cottonwood
1877
Battle of the Clearwater – Misery Hill
1877
Cottonwood Skirmish — Foster Fight (July 4, 1877)
1877
Battle of the Clearwater – South Bank
1877
Battle of White Bird Canyon — Main Engagement (June 17, 1877)
1877
Cottonwood Skirmish No. 2 (Foster Fight)
1877
Battle of the Clearwater
1877
Battle of the Clearwater — Day 2
1877
Nez Perce War – Lahmotta Skirmish
1877
Battle of the Clearwater – Opening Skirmish
1877
Nez Perce War – Toohoolhoolzote Killed at Clearwater
1877
Nez Perce War – Randall's Scouts Skirmish
1877
Nez Perce War – Lolo Trail March
1877
Historic places in Idaho
National Register of Historic Places listings in Idaho, Idaho.
McBeth, Sue, Cabin
Kamiah
First Presbyterian Church
Kamiah
Chinese Mining Camp Archeological Site
Warren
St. Gertrude's Convent and Chapel
Cottonwood
Lochsa Historical Ranger Station
Kooskia
White Bird Grade
White Bird
Salmon Mountain Lookout
Darby (MT)
Bemis, Polly, House
Riggins
Foskett, Dr. Wilson, Home and Drugstore
White Bird
Blue Fox Theatre
Grangeville
Celadon Slope Garden
Warren
Ah Toy Garden
Warren
State Bank of Kooskia
Kooskia
Moore, Jim, Place
Dixie
Baker, James V. and Sophia, House
Cottonwood
Campbell's Ferry
Riggins
Elfers, Jurden Henry, Barn and Field
Lucile
Gold Point Mill
Elk City
Riggins Motel
Riggins
Elk City Wagon Road-Vicory Gulch-Smith Grade Segment
Elk City
Chamberlain Ranger Station Historic District
Payette National Forest
Butts Point Creek Fire Lookout
Salmon
Yawwinma Traditional Cultural Property
Riggins
Fenn Ranger Station
Kooskia
Unlimited access
Everything a full report reveals about Idaho County, Idaho
This page charts the census history of Idaho County, Idaho. 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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Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Explore Idaho records
Frequently asked about Idaho
When does Idaho first appear in the US census?
Idaho, Idaho first appears in the federal census in 1870, with a recorded population of 849.
What is the population of Idaho?
At the most recent federal census (2020), Idaho had a recorded population of 16,541.
Were any battles fought in Idaho?
40 documented military engagements took place in Idaho, including Cottonwood Skirmish No. 1 (Rains Fight), Cottonwood Skirmishes — Rains Fight (July 3, 1877), Nez Perce War — Salmon River Killings (June 13–14, 1877).
How many historic places are in Idaho?
43 sites are listed on the National Register of Historic Places in Idaho, Idaho.
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