The map above shows Alaska and Idaho side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Alaska vs Idaho Geography
Land area
- Alaska has a land area of 571,242 square miles (1,479,509 km²), while Idaho has 82,645 square miles (214,051 km²).
- Alaska's land area is 6.9 times (591%) larger than Idaho's.
Total area
- Alaska: 665,725 square miles (1,724,220 km²) vs Idaho: 83,569 square miles (216,441 km²), including inland and coastal water.
- Alaska's total area is 8.0 times (697%) larger than Idaho's.
Length
- Alaska is 1,201 miles (1,933 km) long from north to south; Idaho is 483 miles (778 km).
- Alaska's north-south length is 2.5 times (149%) longer than Idaho's.
Width
- Alaska spans 1,544 miles (2,485 km) east to west; Idaho spans 352 miles (566 km).
- Alaska's east-west width is 4.4 times (339%) wider than Idaho's.
Highest point
- Alaska's highest point is Denali at 20,235 feet (6,168 m); Idaho's is Borah Peak at 12,631 feet (3,850 m).
- Denali is 7,604 feet higher than Borah Peak.
Lowest point
- Alaska's lowest point is Pacific Ocean at 0 feet; Idaho's is Snake River at 718 feet.
- Alaska's lowest point is 718 feet lower.
Alaska vs Idaho Population and History
Population
- Alaska has a population of 740,133 (2024), while Idaho has 2,001,619 (2024).
- Idaho's population is 2.7 times (170%) larger than Alaska's.
Population density
- Alaska: 1.3 people per square mile vs Idaho: 24.2.
- Idaho's population density is 18.6 times higher than Alaska's.
Biggest city
- Alaska's biggest city is Anchorage with 289,600 people; Idaho's is Boise with 237,963.
- Anchorage's population is 1.2 times (22%) larger than Boise's.
Largest metro area
- Alaska's largest metropolitan area is Anchorage, AK metro area (407,213 people) vs Idaho's Boise City, ID metro area (845,877).
- Boise City, ID metro area's population is 2.1 times (108%) larger than Anchorage, AK metro area's.
History
- Alaska: Admitted to the Union on January 3, 1959, as the 49th state.
- Idaho: Admitted to the Union on July 3, 1890, as the 43rd state.
- In its current form, Idaho is the older of the two by 69 years.
Alaska vs Idaho Economy
GDP
- Alaska's GDP is $71.6 billion (2024) vs Idaho's $129.0 billion.
- Idaho's economic output is 1.8 times (80%) larger than Alaska's.
GDP per capita
- Alaska: $96,695 per person vs Idaho: $64,457.
- Alaska's GDP per capita is 1.5 times (50%) higher than Idaho's.
Average income
- Alaska: $76,234 vs Idaho: $62,323 average income per person (per capita personal income).
- Alaska's average income is 1.2 times (22%) higher than Idaho's.
Alaska vs Idaho Counties
Number of counties
- Alaska has 30 counties, while Idaho has 44.
- Idaho's county count is 1.5 times (47%) higher than Alaska's.
Biggest county by area
- Alaska's largest county is Yukon-Koyukuk Census Area at 145,769 square miles; Idaho's is Idaho County at 8,478 square miles.
- Yukon-Koyukuk Census Area's land area is 17.2 times larger than Idaho County's.
Smallest county by area
- Alaska: Skagway Municipality (443 sq mi) vs Idaho: Payette County (407 sq mi).
- Skagway Municipality's land area is 1.1 times (9%) larger than Payette County's.
Most populous county
- Alaska: Anchorage Municipality (289,600 people) vs Idaho: Ada County (535,799 people).
- Ada County's population is 1.9 times (85%) larger than Anchorage Municipality's.
Least populous county
- Alaska: Yakutat City and Borough (690 people) vs Idaho: Clark County (794 people).
- Clark County's population is 1.2 times (15%) larger than Yakutat City and Borough's.
Richest county
- Alaska: Bristol Bay Borough ($158,406 per capita income) vs Idaho: Blaine County ($202,612).
- Blaine County's income is 1.3 times (28%) richer than Bristol Bay Borough's.
Poorest county
- Alaska: Kusilvak Census Area ($37,765 per capita income) vs Idaho: Madison County ($29,485).
- Kusilvak Census Area's income is 1.3 times (28%) richer than Madison County's.
Alaska vs Idaho Taxes
State income tax
- Alaska has no state income tax, while Idaho has a top income tax rate of 5.3%.
- Idaho's top rate is 5.3 percentage points higher.
Property tax
- Alaska: 1.06% effective rate vs Idaho: 0.43% of home value per year.
- Alaska's rate is 0.63 percentage points higher.
Sales tax
- Alaska: 1.82% combined state and average local rate vs Idaho: 6.03%.
- Idaho's combined rate is 4.21 percentage points higher.
Official Websites
Alaska official website · Idaho official website
Download the Alaska vs Idaho Size Comparison Map for free
To download the map, right-click the image above (or press and hold on a phone or tablet) and choose Save image as. The map is free to use anywhere, including on your own website or in print, as long as you credit it with a link back to this page or to BrilliantMaps.com.
More Size Comparisons
All Alaska size comparisons · All Idaho size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.