The map above shows Idaho and Rhode Island side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Rhode Island Geography
Land area: Idaho has a land area of 82,645 square miles (214,051 km²), while Rhode Island has 1,034 square miles (2,678 km²). Idaho's land area is 79.9 times larger than Rhode Island's.
Total area: Idaho: 83,569 square miles (216,441 km²) vs Rhode Island: 1,545 square miles (4,002 km²), including inland and coastal water. Idaho's total area is 54.1 times larger than Rhode Island's.
Length: Idaho is 483 miles (778 km) long from north to south; Rhode Island is 61 miles (98 km). Idaho's north-south length is 7.9 times (692%) longer than Rhode Island's.
Width: Idaho spans 352 miles (566 km) east to west; Rhode Island spans 42 miles (67 km). Idaho's east-west width is 8.4 times (738%) wider than Rhode Island's.
Highest point: Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Rhode Island's is Jerimoth Hill at 811 feet (247 m). Borah Peak is 11,820 feet higher than Jerimoth Hill.
Lowest point: Idaho's lowest point is Snake River at 718 feet; Rhode Island's is Atlantic Ocean at 0 feet. Rhode Island's lowest point is 718 feet lower.
Idaho vs Rhode Island Population and History
Population: Idaho has a population of 2,001,619 (2024), while Rhode Island has 1,112,308 (2024). Idaho's population is 1.8 times (80%) larger than Rhode Island's.
Population density: Idaho: 24.2 people per square mile vs Rhode Island: 1,075.8. Rhode Island's population density is 44.5 times higher than Idaho's.
Biggest city: Idaho's biggest city is Boise with 237,963 people; Rhode Island's is Providence with 194,706. Boise's population is 1.2 times (22%) larger than Providence's.
Largest metro area: Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Rhode Island's Providence-Warwick, RI-MA metro area (1,700,901). Providence-Warwick, RI-MA metro area's population is 2.0 times (101%) larger than Boise City, ID metro area's.
History: Idaho: Admitted to the Union on July 3, 1890, as the 43rd state. Rhode Island: Admitted to the Union on May 29, 1790, as the 13th state. In its current form, Rhode Island is the older of the two by 100 years.
Idaho vs Rhode Island Economy
GDP: Idaho's GDP is $129.0 billion (2024) vs Rhode Island's $80.4 billion. Idaho's economic output is 1.6 times (60%) larger than Rhode Island's.
GDP per capita: Idaho: $64,457 per person vs Rhode Island: $72,265. Rhode Island's GDP per capita is 1.1 times (12%) higher than Idaho's.
Average income: Idaho: $62,323 vs Rhode Island: $70,622 average income per person (per capita personal income). Rhode Island's average income is 1.1 times (13%) higher than Idaho's.
Idaho vs Rhode Island Counties
Number of counties: Idaho has 44 counties, while Rhode Island has 5. Idaho's county count is 8.8 times (780%) higher than Rhode Island's.
Biggest county by area: Idaho's largest county is Idaho County at 8,478 square miles; Rhode Island's is Providence County at 410 square miles. Idaho County's land area is 20.7 times larger than Providence County's.
Smallest county by area: Idaho: Payette County (407 sq mi) vs Rhode Island: Bristol County (24 sq mi). Payette County's land area is 16.9 times larger than Bristol County's.
Most populous county: Idaho: Ada County (535,799 people) vs Rhode Island: Providence County (675,912 people). Providence County's population is 1.3 times (26%) larger than Ada County's.
Least populous county: Idaho: Clark County (794 people) vs Rhode Island: Bristol County (50,145 people). Bristol County's population is 63.2 times larger than Clark County's.
Richest county: Idaho: Blaine County ($202,612 per capita income) vs Rhode Island: Bristol County ($99,923). Blaine County's income is 2.0 times (103%) richer than Bristol County's.
Poorest county: Idaho: Madison County ($29,485 per capita income) vs Rhode Island: Providence County ($61,040). Providence County's income is 2.1 times (107%) richer than Madison County's.
Idaho vs Rhode Island Taxes
State income tax: Idaho has a top income tax rate of 5.3%, while Rhode Island has a top income tax rate of 5.99%. Rhode Island's top rate is 0.69 percentage points higher.
Property tax: Idaho: 0.43% effective rate vs Rhode Island: 1.07% of home value per year. Rhode Island's rate is 0.64 percentage points higher.
Sales tax: Idaho: 6.03% combined state and average local rate vs Rhode Island: 7%. Rhode Island's combined rate is 0.97 percentage points higher.
Official Websites
Idaho official website · Rhode Island official website
More Size Comparisons
All Idaho size comparisons · All Rhode Island 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.