The map above shows Idaho and Louisiana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Louisiana Geography
Land area
- Idaho has a land area of 82,645 square miles (214,051 km²), while Louisiana has 43,213 square miles (111,921 km²).
- Idaho's land area is 1.9 times (91%) larger than Louisiana's.
Total area
- Idaho: 83,569 square miles (216,441 km²) vs Louisiana: 52,375 square miles (135,652 km²), including inland and coastal water.
- Idaho's total area is 1.6 times (60%) larger than Louisiana's.
Length
- Idaho is 483 miles (778 km) long from north to south; Louisiana is 301 miles (484 km).
- Idaho's north-south length is 1.6 times (60%) longer than Louisiana's.
Width
- Idaho spans 352 miles (566 km) east to west; Louisiana spans 356 miles (574 km).
- Idaho and Louisiana have about the same east-west width.
Highest point
- Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Louisiana's is Driskill Mountain at 533 feet (162 m).
- Borah Peak is 12,098 feet higher than Driskill Mountain.
Lowest point
- Idaho's lowest point is Snake River at 718 feet; Louisiana's is New Orleans at -8 feet.
- Louisiana's lowest point is 726 feet lower.
Idaho vs Louisiana Population and History
Population
- Idaho has a population of 2,001,619 (2024), while Louisiana has 4,597,740 (2024).
- Louisiana's population is 2.3 times (130%) larger than Idaho's.
Population density
- Idaho: 24.2 people per square mile vs Louisiana: 106.4.
- Louisiana's population density is 4.4 times (340%) higher than Idaho's.
Biggest city
- Idaho's biggest city is Boise with 237,963 people; Louisiana's is New Orleans with 362,701.
- New Orleans' population is 1.5 times (52%) larger than Boise's.
Largest metro area
- Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Louisiana's New Orleans-Metairie, LA metro area (966,230).
- New Orleans-Metairie, LA metro area's population is 1.1 times (14%) larger than Boise City, ID metro area's.
History
- Idaho: Admitted to the Union on July 3, 1890, as the 43rd state.
- Louisiana: Admitted to the Union on April 30, 1812, as the 18th state.
- In its current form, Louisiana is the older of the two by 78 years.
Idaho vs Louisiana Economy
GDP
- Idaho's GDP is $129.0 billion (2024) vs Louisiana's $329.2 billion.
- Louisiana's economic output is 2.6 times (155%) larger than Idaho's.
GDP per capita
- Idaho: $64,457 per person vs Louisiana: $71,594.
- Louisiana's GDP per capita is 1.1 times (11%) higher than Idaho's.
Average income
- Idaho: $62,323 vs Louisiana: $61,897 average income per person (per capita personal income).
- Idaho and Louisiana have about the same average income.
Idaho vs Louisiana Counties
Number of counties
- Idaho has 44 counties, while Louisiana has 64.
- Louisiana's county count is 1.5 times (45%) higher than Idaho's.
Biggest county by area
- Idaho's largest county is Idaho County at 8,478 square miles; Louisiana's is Vernon Parish at 1,327 square miles.
- Idaho County's land area is 6.4 times (539%) larger than Vernon Parish's.
Smallest county by area
- Idaho: Payette County (407 sq mi) vs Louisiana: Orleans Parish (170 sq mi).
- Payette County's land area is 2.4 times (140%) larger than Orleans Parish's.
Most populous county
- Idaho: Ada County (535,799 people) vs Louisiana: East Baton Rouge Parish (453,022 people).
- Ada County's population is 1.2 times (18%) larger than East Baton Rouge Parish's.
Least populous county
- Idaho: Clark County (794 people) vs Louisiana: Tensas Parish (3,844 people).
- Tensas Parish's population is 4.8 times (384%) larger than Clark County's.
Richest county
- Idaho: Blaine County ($202,612 per capita income) vs Louisiana: St. Tammany Parish ($82,398).
- Blaine County's income is 2.5 times (146%) richer than St. Tammany Parish's.
Poorest county
- Idaho: Madison County ($29,485 per capita income) vs Louisiana: East Carroll Parish ($36,751).
- East Carroll Parish's income is 1.2 times (25%) richer than Madison County's.
Idaho vs Louisiana Taxes
State income tax
- Idaho has a top income tax rate of 5.3%, while Louisiana has a top income tax rate of 3%.
- Idaho's top rate is 2.3 percentage points higher.
Property tax
- Idaho: 0.43% effective rate vs Louisiana: 0.53% of home value per year.
- Louisiana's rate is 0.1 percentage points higher.
Sales tax
- Idaho: 6.03% combined state and average local rate vs Louisiana: 10.13%.
- Louisiana's combined rate is 4.1 percentage points higher.
Official Websites
Idaho official website · Louisiana official website
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More Size Comparisons
All Idaho size comparisons · All Louisiana 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.