01
Location
Neighboring states: Montana, Nevada, Oregon, Utah, Washington, Wyoming.
Local timeBoise ·
U.S. States / West · Card 012
Idaho
Idaho is a U.S. state in the West. Its capital is Boise.
Find Idaho
● State capital · Gold highlights Idaho.
Map: Natural Earth. Neighboring states use postal abbreviations.
Map: Natural Earth. Neighboring states use postal abbreviations.
At a glance
- Capital
- Boise
- Postal abbreviation
- ID
- Population
- 2,029,733July 1, 2025 · Census estimate
- Total area
- 216,443 km²83,569 square miles · land and water
- Statehood
- July 3, 1890State number 43
- Currency
- U.S. dollar (USD)
Sources: Census · population · Census · area
Idaho in context
Gold shows Idaho. The dot marks Boise.
Alaska and Hawaii are shown in separate insets at different scales.Geography & flag
02
Landscape & places
Craters of the Moon preserves a volcanic landscape of lava flows, cinder cones and sagebrush.
03
Land and water
The total area includes 214,045 km² of land and 2,398 km² of water, according to Census area measurements.
State flag
The state seal on a blue field, with a red-and-gold State of Idaho ribbon below.
Sources: Census · geographic reference · Census · area measurements · National Park Service · Craters Of The Moon
History & statehood
Idaho Territory was organized in 1863 and initially included land that later became parts of Montana and Wyoming. Those territories were separated before Idaho entered the Union in 1890.
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Idaho Territory organized
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Statehood · State number 43
Sources: Congressional Research Service · statehood · U.S. Census Bureau · historical geography · National Park Service
Economy
Main activities
In 2025, real estate and rental and leasing was the largest of the broad industry groups compared here by current-dollar output. Other major groups included professional and business services, government and government enterprises, and educational services, health care, and social assistance.
Total economic output was $135.6 billion in current dollars in 2025.
Largest industry groups · 2025
- Real estate and rental and leasing: 15.4%
- Professional and business services: 11.5%
- Government and government enterprises: 10.4%
- Educational services, health care, and social assistance: 9.5%
Share of total current-dollar GDP. These figures measure output, not employment.
Sources: BEA · annual GDP by state, SAGDP2
Population & economic trends
Population, 2020–2025
Millions of people2.032025 · millions of people
July 1 resident population estimates, using the Census Bureau’s Vintage 2025 series.
Sources: U.S. Census Bureau
View data table
| Year | People |
|---|---|
| 2020 | 1,849,328 |
| 2021 | 1,904,855 |
| 2022 | 1,942,951 |
| 2023 | 1,970,497 |
| 2024 | 2,000,872 |
| 2025 | 2,029,733 |
Real GDP, 2010–2025
Billions of chained 2017 dollars101.572025 · billions of chained 2017 dollars
Real GDP measures economic output adjusted for inflation. The chart uses BEA’s chained 2017 dollars.
Sources: U.S. Bureau of Economic Analysis
View data table
| Year | Millions of chained 2017 dollars |
|---|---|
| 2010 | 62,626.4 |
| 2011 | 62,704.0 |
| 2012 | 62,007.3 |
| 2013 | 64,769.8 |
| 2014 | 66,784.9 |
| 2015 | 67,790.5 |
| 2016 | 70,442.5 |
| 2017 | 72,935.1 |
| 2018 | 77,652.1 |
| 2019 | 81,144.3 |
| 2020 | 82,711.6 |
| 2021 | 88,955.2 |
| 2022 | 92,792.5 |
| 2023 | 95,286.5 |
| 2024 | 99,567.3 |
| 2025 | 101,567.6 |
Government
Idaho has three branches of state government. The governor leads the executive branch. A Senate and House of Representatives form the legislature, which passes state laws and budgets. State courts interpret and apply the law.
Sources: USAGov · Idaho
Knowledge check
Three questions about Idaho.
QUESTION 1 OF 3
What is the capital of Idaho?
Sources & notes
Prepared 27 September 2026. Population: Census Bureau Vintage 2025, July 1 estimates for 2020–2025. Real GDP: BEA annual state accounts, SAGDP9, millions of chained 2017 dollars; industry shares: SAGDP2, current dollars. Data downloaded 27 September 2026. Area measurements include land and water.
Sources: Census · population estimates · BEA · state GDP · Census · area measurements · Natural Earth · map data
The capital clock shows current local time. Statistical figures are dated estimates and may be revised.