The map above shows Idaho and Tennessee side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Tennessee Geography
Land area
- Idaho has a land area of 82,645 square miles (214,051 km²), while Tennessee has 41,224 square miles (106,770 km²).
- Idaho's land area is 2.0 times (100%) larger than Tennessee's.
Total area
- Idaho: 83,569 square miles (216,441 km²) vs Tennessee: 42,130 square miles (109,116 km²), including inland and coastal water.
- Idaho's total area is 2.0 times (98%) larger than Tennessee's.
Length
- Idaho is 483 miles (778 km) long from north to south; Tennessee is 191 miles (308 km).
- Idaho's north-south length is 2.5 times (153%) longer than Tennessee's.
Width
- Idaho spans 352 miles (566 km) east to west; Tennessee spans 497 miles (800 km).
- Tennessee's east-west width is 1.4 times (41%) wider than Idaho's.
Highest point
- Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Tennessee's is Clingmans Dome at 6,624 feet (2,019 m).
- Borah Peak is 6,007 feet higher than Clingmans Dome.
Lowest point
- Idaho's lowest point is Snake River at 718 feet; Tennessee's is Mississippi River at 178 feet.
- Tennessee's lowest point is 540 feet lower.
Idaho vs Tennessee Population and History
Population
- Idaho has a population of 2,001,619 (2024), while Tennessee has 7,227,750 (2024).
- Tennessee's population is 3.6 times (261%) larger than Idaho's.
Population density
- Idaho: 24.2 people per square mile vs Tennessee: 175.3.
- Tennessee's population density is 7.2 times (624%) higher than Idaho's.
Biggest city
- Idaho's biggest city is Boise with 237,963 people; Tennessee's is Nashville with 704,963.
- Nashville's population is 3.0 times (196%) larger than Boise's.
Largest metro area
- Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Tennessee's Nashville-Davidson--Murfreesboro--Franklin, TN metro area (2,150,553).
- Nashville-Davidson--Murfreesboro--Franklin, TN metro area's population is 2.5 times (154%) larger than Boise City, ID metro area's.
History
- Idaho: Admitted to the Union on July 3, 1890, as the 43rd state.
- Tennessee: Admitted to the Union on June 1, 1796, as the 16th state.
- In its current form, Tennessee is the older of the two by 94 years.
Idaho vs Tennessee Economy
GDP
- Idaho's GDP is $129.0 billion (2024) vs Tennessee's $561.2 billion.
- Tennessee's economic output is 4.4 times (335%) larger than Idaho's.
GDP per capita
- Idaho: $64,457 per person vs Tennessee: $77,645.
- Tennessee's GDP per capita is 1.2 times (20%) higher than Idaho's.
Average income
- Idaho: $62,323 vs Tennessee: $66,504 average income per person (per capita personal income).
- Tennessee's average income is 1.1 times (7%) higher than Idaho's.
Idaho vs Tennessee Counties
Number of counties
- Idaho has 44 counties, while Tennessee has 95.
- Tennessee's county count is 2.2 times (116%) higher than Idaho's.
Biggest county by area
- Idaho's largest county is Idaho County at 8,478 square miles; Tennessee's is Shelby County at 753 square miles.
- Idaho County's land area is 11.3 times larger than Shelby County's.
Smallest county by area
- Idaho: Payette County (407 sq mi) vs Tennessee: Trousdale County (114 sq mi).
- Payette County's land area is 3.6 times (256%) larger than Trousdale County's.
Most populous county
- Idaho: Ada County (535,799 people) vs Tennessee: Shelby County (910,530 people).
- Shelby County's population is 1.7 times (70%) larger than Ada County's.
Least populous county
- Idaho: Clark County (794 people) vs Tennessee: Pickett County (5,108 people).
- Pickett County's population is 6.4 times (543%) larger than Clark County's.
Richest county
- Idaho: Blaine County ($202,612 per capita income) vs Tennessee: Williamson County ($139,704).
- Blaine County's income is 1.5 times (45%) richer than Williamson County's.
Poorest county
- Idaho: Madison County ($29,485 per capita income) vs Tennessee: Lake County ($31,572).
- Lake County's income is 1.1 times (7%) richer than Madison County's.
Idaho vs Tennessee Taxes
State income tax
- Idaho has a top income tax rate of 5.3%, while Tennessee has no state income tax.
- Idaho's top rate is 5.3 percentage points higher.
Property tax
- Idaho: 0.43% effective rate vs Tennessee: 0.45% of home value per year.
- Tennessee's rate is 0.02 percentage points higher.
Sales tax
- Idaho: 6.03% combined state and average local rate vs Tennessee: 9.61%.
- Tennessee's combined rate is 3.58 percentage points higher.
Official Websites
Idaho official website · Tennessee official website
Download the Idaho vs Tennessee 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 Idaho size comparisons · All Tennessee 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.