The map above shows Colorado and New Jersey side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs New Jersey Geography
Land area: Colorado has a land area of 103,637 square miles (268,419 km²), while New Jersey has 7,355 square miles (19,049 km²). Colorado's land area is 14.1 times larger than New Jersey's.
Total area: Colorado: 104,095 square miles (269,605 km²) vs New Jersey: 8,719 square miles (22,583 km²), including inland and coastal water. Colorado's total area is 11.9 times larger than New Jersey's.
Length: Colorado is 467 miles (751 km) long from north to south; New Jersey is 169 miles (271 km). Colorado's north-south length is 2.8 times (176%) longer than New Jersey's.
Width: Colorado spans 387 miles (622 km) east to west; New Jersey spans 129 miles (207 km). Colorado's east-west width is 3.0 times (200%) wider than New Jersey's.
Highest point: Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); New Jersey's is High Point at 1,798 feet (548 m). Mount Elbert is 12,624 feet higher than High Point.
Lowest point: Colorado's lowest point is Arikaree River at 3,326 feet; New Jersey's is Atlantic Ocean at 0 feet. New Jersey's lowest point is 3,326 feet lower.
Colorado vs New Jersey Population and History
Population: Colorado has a population of 5,957,493 (2024), while New Jersey has 9,500,851 (2024). New Jersey's population is 1.6 times (59%) larger than Colorado's.
Population density: Colorado: 57.5 people per square mile vs New Jersey: 1,291.8. New Jersey's population density is 22.5 times higher than Colorado's.
Biggest city: Colorado's biggest city is Denver with 729,019 people; New Jersey's is Newark with 317,303. Denver's population is 2.3 times (130%) larger than Newark's.
Largest metro area: Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs New Jersey's New York-Newark-Jersey City, NY-NJ metro area (19,940,274). New York-Newark-Jersey City, NY-NJ metro area's population is 6.5 times (553%) larger than Denver-Aurora-Centennial, CO metro area's.
History: Colorado: Admitted to the Union on August 1, 1876, as the 38th state. New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state. In its current form, New Jersey is the older of the two by 89 years.
Colorado vs New Jersey Economy
GDP: Colorado's GDP is $557.6 billion (2024) vs New Jersey's $846.0 billion. New Jersey's economic output is 1.5 times (52%) larger than Colorado's.
GDP per capita: Colorado: $93,602 per person vs New Jersey: $89,045. Colorado's GDP per capita is 1.1 times (5%) higher than New Jersey's.
Average income: Colorado: $83,055 vs New Jersey: $84,893 average income per person (per capita personal income). Colorado and New Jersey have about the same average income.
Colorado vs New Jersey Counties
Number of counties: Colorado has 64 counties, while New Jersey has 21. Colorado's county count is 3.0 times (205%) higher than New Jersey's.
Biggest county by area: Colorado's largest county is Las Animas County at 4,773 square miles; New Jersey's is Burlington County at 799 square miles. Las Animas County's land area is 6.0 times (497%) larger than Burlington County's.
Smallest county by area: Colorado: Broomfield County (33 sq mi) vs New Jersey: Hudson County (46 sq mi). Hudson County's land area is 1.4 times (40%) larger than Broomfield County's.
Most populous county: Colorado: El Paso County (752,772 people) vs New Jersey: Bergen County (978,641 people). Bergen County's population is 1.3 times (30%) larger than El Paso County's.
Least populous county: Colorado: Hinsdale County (747 people) vs New Jersey: Salem County (65,874 people). Salem County's population is 88.2 times larger than Hinsdale County's.
Richest county: Colorado: Pitkin County ($275,044 per capita income) vs New Jersey: Somerset County ($121,042). Pitkin County's income is 2.3 times (127%) richer than Somerset County's.
Poorest county: Colorado: Crowley County ($27,232 per capita income) vs New Jersey: Cumberland County ($50,843). Cumberland County's income is 1.9 times (87%) richer than Crowley County's.
Colorado vs New Jersey Taxes
State income tax: Colorado has a top income tax rate of 4.4%, while New Jersey has a top income tax rate of 10.75%. New Jersey's top rate is 6.35 percentage points higher.
Property tax: Colorado: 0.49% effective rate vs New Jersey: 1.89% of home value per year. New Jersey's rate is 1.4 percentage points higher.
Sales tax: Colorado: 7.89% combined state and average local rate vs New Jersey: 6.6%. Colorado's combined rate is 1.29 percentage points higher.
Official Websites
Colorado official website · New Jersey official website
More Size Comparisons
All Colorado size comparisons · All New Jersey 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.