The map above shows Idaho and Wisconsin side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Wisconsin Geography
Land area
- Idaho has a land area of 82,645 square miles (214,051 km²), while Wisconsin has 54,168 square miles (140,294 km²).
- Idaho's land area is 1.5 times (53%) larger than Wisconsin's.
Total area
- Idaho: 83,569 square miles (216,441 km²) vs Wisconsin: 65,497 square miles (169,636 km²), including inland and coastal water.
- Idaho's total area is 1.3 times (28%) larger than Wisconsin's.
Length
- Idaho is 483 miles (778 km) long from north to south; Wisconsin is 368 miles (593 km).
- Idaho's north-south length is 1.3 times (31%) longer than Wisconsin's.
Width
- Idaho spans 352 miles (566 km) east to west; Wisconsin spans 323 miles (521 km).
- Idaho's east-west width is 1.1 times (9%) wider than Wisconsin's.
Highest point
- Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Wisconsin's is Timms Hill at 1,946 feet (593 m).
- Borah Peak is 10,685 feet higher than Timms Hill.
Lowest point
- Idaho's lowest point is Snake River at 718 feet; Wisconsin's is Lake Michigan at 577 feet.
- Wisconsin's lowest point is 141 feet lower.
Idaho vs Wisconsin Population and History
Population
- Idaho has a population of 2,001,619 (2024), while Wisconsin has 5,960,975 (2024).
- Wisconsin's population is 3.0 times (198%) larger than Idaho's.
Population density
- Idaho: 24.2 people per square mile vs Wisconsin: 110.0.
- Wisconsin's population density is 4.5 times (355%) higher than Idaho's.
Biggest city
- Idaho's biggest city is Boise with 237,963 people; Wisconsin's is Milwaukee with 563,531.
- Milwaukee's population is 2.4 times (137%) larger than Boise's.
Largest metro area
- Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Wisconsin's Minneapolis-St. Paul-Bloomington, MN-WI metro area (3,757,952).
- Minneapolis-St. Paul-Bloomington, MN-WI metro area's population is 4.4 times (344%) larger than Boise City, ID metro area's.
History
- Idaho: Admitted to the Union on July 3, 1890, as the 43rd state.
- Wisconsin: Admitted to the Union on May 29, 1848, as the 30th state.
- In its current form, Wisconsin is the older of the two by 42 years.
Idaho vs Wisconsin Economy
GDP
- Idaho's GDP is $129.0 billion (2024) vs Wisconsin's $453.3 billion.
- Wisconsin's economic output is 3.5 times (251%) larger than Idaho's.
GDP per capita
- Idaho: $64,457 per person vs Wisconsin: $76,044.
- Wisconsin's GDP per capita is 1.2 times (18%) higher than Idaho's.
Average income
- Idaho: $62,323 vs Wisconsin: $67,755 average income per person (per capita personal income).
- Wisconsin's average income is 1.1 times (9%) higher than Idaho's.
Idaho vs Wisconsin Counties
Number of counties
- Idaho has 44 counties, while Wisconsin has 72.
- Wisconsin's county count is 1.6 times (64%) higher than Idaho's.
Biggest county by area
- Idaho's largest county is Idaho County at 8,478 square miles; Wisconsin's is Marathon County at 1,545 square miles.
- Idaho County's land area is 5.5 times (449%) larger than Marathon County's.
Smallest county by area
- Idaho: Payette County (407 sq mi) vs Wisconsin: Pepin County (232 sq mi).
- Payette County's land area is 1.8 times (75%) larger than Pepin County's.
Most populous county
- Idaho: Ada County (535,799 people) vs Wisconsin: Milwaukee County (924,740 people).
- Milwaukee County's population is 1.7 times (73%) larger than Ada County's.
Least populous county
- Idaho: Clark County (794 people) vs Wisconsin: Menominee County (4,286 people).
- Menominee County's population is 5.4 times (440%) larger than Clark County's.
Richest county
- Idaho: Blaine County ($202,612 per capita income) vs Wisconsin: Ozaukee County ($109,947).
- Blaine County's income is 1.8 times (84%) richer than Ozaukee County's.
Poorest county
- Idaho: Madison County ($29,485 per capita income) vs Wisconsin: Menominee County ($43,696).
- Menominee County's income is 1.5 times (48%) richer than Madison County's.
Idaho vs Wisconsin Taxes
State income tax
- Idaho has a top income tax rate of 5.3%, while Wisconsin has a top income tax rate of 7.65%.
- Wisconsin's top rate is 2.35 percentage points higher.
Property tax
- Idaho: 0.43% effective rate vs Wisconsin: 1.25% of home value per year.
- Wisconsin's rate is 0.82 percentage points higher.
Sales tax
- Idaho: 6.03% combined state and average local rate vs Wisconsin: 5.72%.
- Idaho's combined rate is 0.31 percentage points higher.
Official Websites
Idaho official website · Wisconsin official website
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More Size Comparisons
All Idaho size comparisons · All Wisconsin 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.