Idaho

Elmore

28,666
2020 population
1890
first census record
14
census records

About Elmore

Elmore, Idaho, first appears in the United States federal census in 1890, when it recorded a population of 1,870. At the most recent census, in 2020, its population stood at 28,666.

Its recorded population peaked at 29,130 in 2000, and has since declined by roughly 2 percent.

On the ground today, 5 documented military engagements have been recorded within the county, among them Ward Massacre ID, Bannock War Outbreak — Camas Prairie (May 1878), Bannock War Outbreak — Camas Prairie 1878, and 25 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202028,666
201027,038
200029,130
199021,205
198021,565
197017,479
196016,719
19506,687
19405,518
19304,491
19205,087
19104,785
19002,286
18901,870
Source

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

Battles & engagements in Elmore

Military engagements that took place in Elmore, Idaho.

Ward Massacre ID
1854
Bannock War Outbreak — Camas Prairie (May 1878)
1878
Bannock War Outbreak — Camas Prairie 1878
1878
Camas Prairie Skirmish (Bannock War)
1878
Bannock War: Camas Prairie Fight
1878

Historic places in Elmore

National Register of Historic Places listings in Elmore, Idaho.

South Boise Historic Mining District
Rocky Bar and
Mountain Home Carnegie Library
Mountain Home
Atlanta Historic District
Atlanta
Anchustegui, Pedro, Pelota Court
Mountain Home
Atlanta Ranger Station Historic District
Atlanta
Turner Hotel
Mountain Home
Glenns Ferry School
Glenns Ferry
Our Lady of Limerick Catholic Church
Glenns Ferry
Browse all Idahohistoric sites ›

Other counties in Idaho

Explore census history and historic records for more Idaho counties.

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Everything a full report reveals about Elmore County, Idaho

This page charts the census history of Elmore 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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Frequently asked about Elmore

When does Elmore first appear in the US census?
Elmore, Idaho first appears in the federal census in 1890, with a recorded population of 1,870.
What is the population of Elmore?
At the most recent federal census (2020), Elmore had a recorded population of 28,666.
When did Elmore's population peak?
Elmore's recorded population peaked at 29,130 in 2000.
Were any battles fought in Elmore?
5 documented military engagements took place in Elmore, including Ward Massacre ID, Bannock War Outbreak — Camas Prairie (May 1878), Bannock War Outbreak — Camas Prairie 1878.
How many historic places are in Elmore?
25 sites are listed on the National Register of Historic Places in Elmore, Idaho.
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