The map above shows New Jersey and Washington side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Jersey vs Washington Geography
Land area: New Jersey has a land area of 7,355 square miles (19,049 km²), while Washington has 66,455 square miles (172,119 km²). Washington's land area is 9.0 times (804%) larger than New Jersey's.
Total area: New Jersey: 8,719 square miles (22,583 km²) vs Washington: 71,301 square miles (184,668 km²), including inland and coastal water. Washington's total area is 8.2 times (718%) larger than New Jersey's.
Length: New Jersey is 169 miles (271 km) long from north to south; Washington is 238 miles (383 km). Washington's north-south length is 1.4 times (41%) longer than New Jersey's.
Width: New Jersey spans 129 miles (207 km) east to west; Washington spans 399 miles (641 km). Washington's east-west width is 3.1 times (209%) wider than New Jersey's.
Highest point: New Jersey's highest point is High Point at 1,798 feet (548 m); Washington's is Mount Rainier at 14,409 feet (4,392 m). Mount Rainier is 12,611 feet higher than High Point.
Lowest point: New Jersey'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.
New Jersey vs Washington Population and History
Population: New Jersey has a population of 9,500,851 (2024), while Washington has 7,958,180 (2024). New Jersey's population is 1.2 times (19%) larger than Washington's.
Population density: New Jersey: 1,291.8 people per square mile vs Washington: 119.8. New Jersey's population density is 10.8 times higher than Washington's.
Biggest city: New Jersey's biggest city is Newark with 317,303 people; Washington's is Seattle with 780,995. Seattle's population is 2.5 times (146%) larger than Newark's.
Largest metro area: New Jersey's largest metropolitan area is New York-Newark-Jersey City, NY-NJ metro area (19,940,274 people) vs Washington's Seattle-Tacoma-Bellevue, WA metro area (4,145,494). New York-Newark-Jersey City, NY-NJ metro area's population is 4.8 times (381%) larger than Seattle-Tacoma-Bellevue, WA metro area's.
History: New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state. Washington: Admitted to the Union on November 11, 1889, as the 42nd state. In its current form, New Jersey is the older of the two by 102 years.
New Jersey vs Washington Economy
GDP: New Jersey's GDP is $846.0 billion (2024) vs Washington's $856.0 billion. New Jersey and Washington have about the same economic output.
GDP per capita: New Jersey: $89,045 per person vs Washington: $107,564. Washington's GDP per capita is 1.2 times (21%) higher than New Jersey's.
Average income: New Jersey: $84,893 vs Washington: $85,187 average income per person (per capita personal income). New Jersey and Washington have about the same average income.
New Jersey vs Washington Counties
Number of counties: New Jersey has 21 counties, while Washington has 39. Washington's county count is 1.9 times (86%) higher than New Jersey's.
Biggest county by area: New Jersey's largest county is Burlington County at 799 square miles; Washington's is Okanogan County at 5,266 square miles. Okanogan County's land area is 6.6 times (559%) larger than Burlington County's.
Smallest county by area: New Jersey: Hudson County (46 sq mi) vs Washington: San Juan County (174 sq mi). San Juan County's land area is 3.8 times (276%) larger than Hudson County's.
Most populous county: New Jersey: Bergen County (978,641 people) vs Washington: King County (2,340,211 people). King County's population is 2.4 times (139%) larger than Bergen County's.
Least populous county: New Jersey: Salem County (65,874 people) vs Washington: Garfield County (2,404 people). Salem County's population is 27.4 times larger than Garfield County's.
Richest county: New Jersey: Somerset County ($121,042 per capita income) vs Washington: King County ($128,684). King County's income is 1.1 times (6%) richer than Somerset County's.
Poorest county: New Jersey: Cumberland County ($50,843 per capita income) vs Washington: Ferry County ($50,456). Cumberland County and Ferry County have about the same income.
New Jersey vs Washington Taxes
State income tax: New Jersey has a top income tax rate of 10.75%, while Washington has a 9% tax on capital gains only.
Property tax: New Jersey: 1.89% effective rate vs Washington: 0.79% of home value per year. New Jersey's rate is 1.1 percentage points higher.
Sales tax: New Jersey: 6.6% combined state and average local rate vs Washington: 9.57%. Washington's combined rate is 2.97 percentage points higher.
Official Websites
New Jersey official website · Washington official website
More Size Comparisons
All New Jersey 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.