The map above shows Montana and New Jersey side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs New Jersey Geography
Land area: Montana has a land area of 145,550 square miles (376,973 km²), while New Jersey has 7,355 square miles (19,049 km²). Montana's land area is 19.8 times larger than New Jersey's.
Total area: Montana: 147,043 square miles (380,840 km²) vs New Jersey: 8,719 square miles (22,583 km²), including inland and coastal water. Montana's total area is 16.9 times larger than New Jersey's.
Length: Montana is 319 miles (514 km) long from north to south; New Jersey is 169 miles (271 km). Montana's north-south length is 1.9 times (89%) longer than New Jersey's.
Width: Montana spans 607 miles (976 km) east to west; New Jersey spans 129 miles (207 km). Montana's east-west width is 4.7 times (371%) wider than New Jersey's.
Highest point: Montana's highest point is Granite Peak at 12,767 feet (3,891 m); New Jersey's is High Point at 1,798 feet (548 m). Granite Peak is 10,969 feet higher than High Point.
Lowest point: Montana's lowest point is Kootenai River at 1,805 feet; New Jersey's is Atlantic Ocean at 0 feet. New Jersey's lowest point is 1,805 feet lower.
Montana vs New Jersey Population and History
Population: Montana has a population of 1,137,233 (2024), while New Jersey has 9,500,851 (2024). New Jersey's population is 8.4 times (735%) larger than Montana's.
Population density: Montana: 7.8 people per square mile vs New Jersey: 1,291.8. New Jersey's population density is 165.6 times higher than Montana's.
Biggest city: Montana's biggest city is Billings with 121,483 people; New Jersey's is Newark with 317,303. Newark's population is 2.6 times (161%) larger than Billings'.
Largest metro area: Montana's largest metropolitan area is Billings, MT metro area (192,531 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 103.6 times larger than Billings, MT metro area's.
History: Montana: Admitted to the Union on November 8, 1889, as the 41st 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 102 years.
Montana vs New Jersey Economy
GDP: Montana's GDP is $78.4 billion (2024) vs New Jersey's $846.0 billion. New Jersey's economic output is 10.8 times larger than Montana's.
GDP per capita: Montana: $68,975 per person vs New Jersey: $89,045. New Jersey's GDP per capita is 1.3 times (29%) higher than Montana's.
Average income: Montana: $69,240 vs New Jersey: $84,893 average income per person (per capita personal income). New Jersey's average income is 1.2 times (23%) higher than Montana's.
Montana vs New Jersey Counties
Number of counties: Montana has 56 counties, while New Jersey has 21. Montana's county count is 2.7 times (167%) higher than New Jersey's.
Biggest county by area: Montana's largest county is Beaverhead County at 5,543 square miles; New Jersey's is Burlington County at 799 square miles. Beaverhead County's land area is 6.9 times (593%) larger than Burlington County's.
Smallest county by area: Montana: Silver Bow County (718 sq mi) vs New Jersey: Hudson County (46 sq mi). Silver Bow County's land area is 15.5 times larger than Hudson County's.
Most populous county: Montana: Yellowstone County (171,583 people) vs New Jersey: Bergen County (978,641 people). Bergen County's population is 5.7 times (470%) larger than Yellowstone County's.
Least populous county: Montana: Petroleum County (525 people) vs New Jersey: Salem County (65,874 people). Salem County's population is 125.5 times larger than Petroleum County's.
Richest county: Montana: Gallatin County ($94,573 per capita income) vs New Jersey: Somerset County ($121,042). Somerset County's income is 1.3 times (28%) richer than Gallatin County's.
Poorest county: Montana: Blaine County ($37,554 per capita income) vs New Jersey: Cumberland County ($50,843). Cumberland County's income is 1.4 times (35%) richer than Blaine County's.
Montana vs New Jersey Taxes
State income tax: Montana has a top income tax rate of 5.65%, while New Jersey has a top income tax rate of 10.75%. New Jersey's top rate is 5.1 percentage points higher.
Property tax: Montana: 0.69% effective rate vs New Jersey: 1.89% of home value per year. New Jersey's rate is 1.2 percentage points higher.
Sales tax: Montana: 0% combined state and average local rate vs New Jersey: 6.6%. New Jersey's combined rate is 6.6 percentage points higher.
Official Websites
Montana official website · New Jersey official website
More Size Comparisons
All Montana 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.