The map above shows Idaho and Oregon side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Oregon Geography
Land area
- Idaho has a land area of 82,645 square miles (214,051 km²), while Oregon has 95,997 square miles (248,630 km²).
- Oregon's land area is 1.2 times (16%) larger than Idaho's.
Total area
- Idaho: 83,569 square miles (216,441 km²) vs Oregon: 98,379 square miles (254,799 km²), including inland and coastal water.
- Oregon's total area is 1.2 times (18%) larger than Idaho's.
Length
- Idaho is 483 miles (778 km) long from north to south; Oregon is 453 miles (730 km).
- Idaho's north-south length is 1.1 times (7%) longer than Oregon's.
Width
- Idaho spans 352 miles (566 km) east to west; Oregon spans 445 miles (715 km).
- Oregon's east-west width is 1.3 times (26%) wider than Idaho's.
Highest point
- Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Oregon's is Mount Hood at 11,232 feet (3,424 m).
- Borah Peak is 1,399 feet higher than Mount Hood.
Lowest point
- Idaho's lowest point is Snake River at 718 feet; Oregon's is Pacific Ocean at 0 feet.
- Oregon's lowest point is 718 feet lower.
Idaho vs Oregon Population and History
Population
- Idaho has a population of 2,001,619 (2024), while Oregon has 4,272,371 (2024).
- Oregon's population is 2.1 times (113%) larger than Idaho's.
Population density
- Idaho: 24.2 people per square mile vs Oregon: 44.5.
- Oregon's population density is 1.8 times (84%) higher than Idaho's.
Biggest city
- Idaho's biggest city is Boise with 237,963 people; Oregon's is Portland with 635,749.
- Portland's population is 2.7 times (167%) larger than Boise's.
Largest metro area
- Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Oregon's Portland-Vancouver-Hillsboro, OR-WA metro area (2,537,904).
- Portland-Vancouver-Hillsboro, OR-WA metro area's population is 3.0 times (200%) larger than Boise City, ID metro area's.
History
- Idaho: Admitted to the Union on July 3, 1890, as the 43rd state.
- Oregon: Admitted to the Union on February 14, 1859, as the 33rd state.
- In its current form, Oregon is the older of the two by 31 years.
Idaho vs Oregon Economy
GDP
- Idaho's GDP is $129.0 billion (2024) vs Oregon's $330.2 billion.
- Oregon's economic output is 2.6 times (156%) larger than Idaho's.
GDP per capita
- Idaho: $64,457 per person vs Oregon: $77,299.
- Oregon's GDP per capita is 1.2 times (20%) higher than Idaho's.
Average income
- Idaho: $62,323 vs Oregon: $70,823 average income per person (per capita personal income).
- Oregon's average income is 1.1 times (14%) higher than Idaho's.
Idaho vs Oregon Counties
Number of counties
- Idaho has 44 counties, while Oregon has 36.
- Idaho's county count is 1.2 times (22%) higher than Oregon's.
Biggest county by area
- Idaho's largest county is Idaho County at 8,478 square miles; Oregon's is Harney County at 10,134 square miles.
- Harney County's land area is 1.2 times (20%) larger than Idaho County's.
Smallest county by area
- Idaho: Payette County (407 sq mi) vs Oregon: Multnomah County (431 sq mi).
- Multnomah County's land area is 1.1 times (6%) larger than Payette County's.
Most populous county
- Idaho: Ada County (535,799 people) vs Oregon: Multnomah County (795,897 people).
- Multnomah County's population is 1.5 times (49%) larger than Ada County's.
Least populous county
- Idaho: Clark County (794 people) vs Oregon: Wheeler County (1,456 people).
- Wheeler County's population is 1.8 times (83%) larger than Clark County's.
Richest county
- Idaho: Blaine County ($202,612 per capita income) vs Oregon: Deschutes County ($86,176).
- Blaine County's income is 2.4 times (135%) richer than Deschutes County's.
Poorest county
- Idaho: Madison County ($29,485 per capita income) vs Oregon: Malheur County ($42,974).
- Malheur County's income is 1.5 times (46%) richer than Madison County's.
Idaho vs Oregon Taxes
State income tax
- Idaho has a top income tax rate of 5.3%, while Oregon has a top income tax rate of 9.9%.
- Oregon's top rate is 4.6 percentage points higher.
Property tax
- Idaho: 0.43% effective rate vs Oregon: 0.78% of home value per year.
- Oregon's rate is 0.35 percentage points higher.
Sales tax
- Idaho: 6.03% combined state and average local rate vs Oregon: 0%.
- Idaho's combined rate is 6.03 percentage points higher.
Official Websites
Idaho official website · Oregon official website
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More Size Comparisons
All Idaho size comparisons · All Oregon 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.