The map above shows Montana and South Carolina side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs South Carolina Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while South Carolina has 30,064 square miles (77,866 km²). Montana's land area is 4.8 times (384%) larger than South Carolina's.
Total area: Montana: 147,043 square miles (380,840 km²) vs South Carolina: 32,024 square miles (82,940 km²), including inland and coastal water. Montana's total area is 4.6 times (359%) larger than South Carolina's.
Length: Montana is 319 miles (514 km) long from north to south; South Carolina is 236 miles (380 km). Montana's north-south length is 1.4 times (35%) longer than South Carolina's.
Width: Montana spans 607 miles (976 km) east to west; South Carolina spans 279 miles (449 km). Montana's east-west width is 2.2 times (118%) wider than South Carolina's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); South Carolina's is Sassafras Mountain at 3,497 feet (1,066 m). Granite Peak is 9,270 feet higher than Sassafras Mountain.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; South Carolina's is Atlantic Ocean at 0 feet. South Carolina's lowest point is 1,805 feet lower.
Montana vs South Carolina Population and History
Population: Montana has a population of 1,137,233 (2024), while South Carolina has 5,478,831 (2024). South Carolina's population is 4.8 times (382%) larger than Montana's.
Population density: Montana: 7.8 people per square mile vs South Carolina: 182.2. South Carolina's population density is 23.4 times higher than Montana's.
Biggest city: Montana's biggest city is Billings with 121,483 people; South Carolina's is Charleston with 157,665. Charleston's population is 1.3 times (30%) larger than Billings'.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs South Carolina's Charlotte-Concord-Gastonia, NC-SC metro area (2,883,370). Charlotte-Concord-Gastonia, NC-SC metro area's population is 15.0 times larger than Billings, MT metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st state. South Carolina: Admitted to the Union on May 23, 1788, as the 8th state. In its current form, South Carolina is the older of the two by 101 years.
Montana vs South Carolina Economy
GDP: Montana's GDP is $78.4 billion (2024) vs South Carolina's $357.1 billion. South Carolina's economic output is 4.6 times (355%) larger than Montana's.
GDP per capita: Montana: $68,975 per person vs South Carolina: $65,173. Montana's GDP per capita is 1.1 times (6%) higher than South Carolina's.
Average income: Montana: $69,240 vs South Carolina: $60,776 average income per person (per capita personal income). Montana's average income is 1.1 times (14%) higher than South Carolina's.
Montana vs South Carolina Counties
Number of counties: Montana has 56 counties, while South Carolina has 46. Montana's county count is 1.2 times (22%) higher than South Carolina's.
Biggest county by area: Montana's largest county is Beaverhead County at 5,543 square miles; South Carolina's is Horry County at 1,133 square miles. Beaverhead County's land area is 4.9 times (389%) larger than Horry County's.
Smallest county by area: Montana: Silver Bow County (718 sq mi) vs South Carolina: McCormick County (359 sq mi). Silver Bow County's land area is 2.0 times (100%) larger than McCormick County's.
Most populous county: Montana: Yellowstone County (171,583 people) vs South Carolina: Greenville County (570,745 people). Greenville County's population is 3.3 times (233%) larger than Yellowstone County's.
Least populous county: Montana: Petroleum County (525 people) vs South Carolina: Allendale County (7,551 people). Allendale County's population is 14.4 times larger than Petroleum County's.
Richest county: Montana: Gallatin County ($94,573 per capita income) vs South Carolina: Charleston County ($90,550). Gallatin County and Charleston County have about the same income.
Poorest county: Montana: Blaine County ($37,554 per capita income) vs South Carolina: Marlboro County ($41,332). Marlboro County's income is 1.1 times (10%) richer than Blaine County's.
Montana vs South Carolina Taxes
State income tax: Montana has a top income tax rate of 5.65%, while South Carolina has a top income tax rate of 6%. South Carolina's top rate is 0.35 percentage points higher.
Property tax: Montana: 0.69% effective rate vs South Carolina: 0.45% of home value per year. Montana's rate is 0.24 percentage points higher.
Sales tax: Montana: 0% combined state and average local rate vs South Carolina: 7.49%. South Carolina's combined rate is 7.49 percentage points higher.
Official Websites
Montana official website · South Carolina official website
More Size Comparisons
All Montana size comparisons · All South Carolina 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.