The map above shows South Carolina and Washington side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
South Carolina vs Washington Geography
Land area
- South Carolina has a land area of 30,064 square miles (77,866 km²), while Washington has 66,455 square miles (172,119 km²).
- Washington's land area is 2.2 times (121%) larger than South Carolina's.
Total area
- South Carolina: 32,024 square miles (82,940 km²) vs Washington: 71,301 square miles (184,668 km²), including inland and coastal water.
- Washington's total area is 2.2 times (123%) larger than South Carolina's.
Length
- South Carolina is 236 miles (380 km) long from north to south; Washington is 238 miles (383 km).
- South Carolina and Washington have about the same north-south length.
Width
- South Carolina spans 279 miles (449 km) east to west; Washington spans 399 miles (641 km).
- Washington's east-west width is 1.4 times (43%) wider than South Carolina's.
Highest point
- South Carolina's highest point is Sassafras Mountain at 3,497 feet (1,066 m); Washington's is Mount Rainier at 14,409 feet (4,392 m).
- Mount Rainier is 10,912 feet higher than Sassafras Mountain.
Lowest point
- South Carolina's lowest point is Atlantic Ocean at 0 feet; Washington's is Pacific Ocean at 0 feet.
- Both lowest points are at or near sea level.
South Carolina vs Washington Population and History
Population
- South Carolina has a population of 5,478,831 (2024), while Washington has 7,958,180 (2024).
- Washington's population is 1.5 times (45%) larger than South Carolina's.
Population density
- South Carolina: 182.2 people per square mile vs Washington: 119.8.
- South Carolina's population density is 1.5 times (52%) higher than Washington's.
Biggest city
- South Carolina's biggest city is Charleston with 157,665 people; Washington's is Seattle with 780,995.
- Seattle's population is 5.0 times (395%) larger than Charleston's.
Largest metro area
- South Carolina's largest metropolitan area is Charlotte-Concord-Gastonia, NC-SC metro area (2,883,370 people) vs Washington's Seattle-Tacoma-Bellevue, WA metro area (4,145,494).
- Seattle-Tacoma-Bellevue, WA metro area's population is 1.4 times (44%) larger than Charlotte-Concord-Gastonia, NC-SC metro area's.
History
- South Carolina: Admitted to the Union on May 23, 1788, as the 8th state.
- Washington: Admitted to the Union on November 11, 1889, as the 42nd state.
- In its current form, South Carolina is the older of the two by 101 years.
South Carolina vs Washington Economy
GDP
- South Carolina's GDP is $357.1 billion (2024) vs Washington's $856.0 billion.
- Washington's economic output is 2.4 times (140%) larger than South Carolina's.
GDP per capita
- South Carolina: $65,173 per person vs Washington: $107,564.
- Washington's GDP per capita is 1.7 times (65%) higher than South Carolina's.
Average income
- South Carolina: $60,776 vs Washington: $85,187 average income per person (per capita personal income).
- Washington's average income is 1.4 times (40%) higher than South Carolina's.
South Carolina vs Washington Counties
Number of counties
- South Carolina has 46 counties, while Washington has 39.
- South Carolina's county count is 1.2 times (18%) higher than Washington's.
Biggest county by area
- South Carolina's largest county is Horry County at 1,133 square miles; Washington's is Okanogan County at 5,266 square miles.
- Okanogan County's land area is 4.6 times (365%) larger than Horry County's.
Smallest county by area
- South Carolina: McCormick County (359 sq mi) vs Washington: San Juan County (174 sq mi).
- McCormick County's land area is 2.1 times (106%) larger than San Juan County's.
Most populous county
- South Carolina: Greenville County (570,745 people) vs Washington: King County (2,340,211 people).
- King County's population is 4.1 times (310%) larger than Greenville County's.
Least populous county
- South Carolina: Allendale County (7,551 people) vs Washington: Garfield County (2,404 people).
- Allendale County's population is 3.1 times (214%) larger than Garfield County's.
Richest county
- South Carolina: Charleston County ($90,550 per capita income) vs Washington: King County ($128,684).
- King County's income is 1.4 times (42%) richer than Charleston County's.
Poorest county
- South Carolina: Marlboro County ($41,332 per capita income) vs Washington: Ferry County ($50,456).
- Ferry County's income is 1.2 times (22%) richer than Marlboro County's.
South Carolina vs Washington Taxes
State income tax
- South Carolina has a top income tax rate of 6%, while Washington has a 9% tax on capital gains only.
Property tax
- South Carolina: 0.45% effective rate vs Washington: 0.79% of home value per year.
- Washington's rate is 0.34 percentage points higher.
Sales tax
- South Carolina: 7.49% combined state and average local rate vs Washington: 9.57%.
- Washington's combined rate is 2.08 percentage points higher.
Official Websites
South Carolina official website · Washington official website
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More Size Comparisons
All South Carolina size comparisons · All Washington 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.