The map above shows New Jersey and Wisconsin side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Jersey vs Wisconsin Geography
Land area: New Jersey has a land area of 7,355 square miles (19,049 km²), while Wisconsin has 54,168 square miles (140,294 km²). Wisconsin's land area is 7.4 times (636%) larger than New Jersey's.
Total area: New Jersey: 8,719 square miles (22,583 km²) vs Wisconsin: 65,497 square miles (169,636 km²), including inland and coastal water. Wisconsin's total area is 7.5 times (651%) larger than New Jersey's.
Length: New Jersey is 169 miles (271 km) long from north to south; Wisconsin is 368 miles (593 km). Wisconsin's north-south length is 2.2 times (118%) longer than New Jersey's.
Width: New Jersey spans 129 miles (207 km) east to west; Wisconsin spans 323 miles (521 km). Wisconsin's east-west width is 2.5 times (150%) wider than New Jersey's.
Highest point: New Jersey's highest point is High Point at 1,798 feet (548 m); Wisconsin's is Timms Hill at 1,946 feet (593 m). Timms Hill is 148 feet higher than High Point.
Lowest point: New Jersey's lowest point is Atlantic Ocean at 0 feet; Wisconsin's is Lake Michigan at 577 feet. New Jersey's lowest point is 577 feet lower.
New Jersey vs Wisconsin Population and History
Population: New Jersey has a population of 9,500,851 (2024), while Wisconsin has 5,960,975 (2024). New Jersey's population is 1.6 times (59%) larger than Wisconsin's.
Population density: New Jersey: 1,291.8 people per square mile vs Wisconsin: 110.0. New Jersey's population density is 11.7 times higher than Wisconsin's.
Biggest city: New Jersey's biggest city is Newark with 317,303 people; Wisconsin's is Milwaukee with 563,531. Milwaukee's population is 1.8 times (78%) 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 Wisconsin's Minneapolis-St. Paul-Bloomington, MN-WI metro area (3,757,952). New York-Newark-Jersey City, NY-NJ metro area's population is 5.3 times (431%) larger than Minneapolis-St. Paul-Bloomington, MN-WI metro area's.
History: New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state. Wisconsin: Admitted to the Union on May 29, 1848, as the 30th state. In its current form, New Jersey is the older of the two by 61 years.
New Jersey vs Wisconsin Economy
GDP: New Jersey's GDP is $846.0 billion (2024) vs Wisconsin's $453.3 billion. New Jersey's economic output is 1.9 times (87%) larger than Wisconsin's.
GDP per capita: New Jersey: $89,045 per person vs Wisconsin: $76,044. New Jersey's GDP per capita is 1.2 times (17%) higher than Wisconsin's.
Average income: New Jersey: $84,893 vs Wisconsin: $67,755 average income per person (per capita personal income). New Jersey's average income is 1.3 times (25%) higher than Wisconsin's.
New Jersey vs Wisconsin Counties
Number of counties: New Jersey has 21 counties, while Wisconsin has 72. Wisconsin's county count is 3.4 times (243%) higher than New Jersey's.
Biggest county by area: New Jersey's largest county is Burlington County at 799 square miles; Wisconsin's is Marathon County at 1,545 square miles. Marathon County's land area is 1.9 times (93%) larger than Burlington County's.
Smallest county by area: New Jersey: Hudson County (46 sq mi) vs Wisconsin: Pepin County (232 sq mi). Pepin County's land area is 5.0 times (402%) larger than Hudson County's.
Most populous county: New Jersey: Bergen County (978,641 people) vs Wisconsin: Milwaukee County (924,740 people). Bergen County's population is 1.1 times (6%) larger than Milwaukee County's.
Least populous county: New Jersey: Salem County (65,874 people) vs Wisconsin: Menominee County (4,286 people). Salem County's population is 15.4 times larger than Menominee County's.
Richest county: New Jersey: Somerset County ($121,042 per capita income) vs Wisconsin: Ozaukee County ($109,947). Somerset County's income is 1.1 times (10%) richer than Ozaukee County's.
Poorest county: New Jersey: Cumberland County ($50,843 per capita income) vs Wisconsin: Menominee County ($43,696). Cumberland County's income is 1.2 times (16%) richer than Menominee County's.
New Jersey vs Wisconsin Taxes
State income tax: New Jersey has a top income tax rate of 10.75%, while Wisconsin has a top income tax rate of 7.65%. New Jersey's top rate is 3.1 percentage points higher.
Property tax: New Jersey: 1.89% effective rate vs Wisconsin: 1.25% of home value per year. New Jersey's rate is 0.64 percentage points higher.
Sales tax: New Jersey: 6.6% combined state and average local rate vs Wisconsin: 5.72%. New Jersey's combined rate is 0.88 percentage points higher.
Official Websites
New Jersey official website · Wisconsin official website
More Size Comparisons
All New Jersey size comparisons · All Wisconsin 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.