The map above shows Connecticut and Wisconsin side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Connecticut vs Wisconsin Geography
Land area: Connecticut has a land area of 4,843 square miles (12,542 km²), while Wisconsin has 54,168 square miles (140,294 km²). Wisconsin's land area is 11.2 times larger than Connecticut's.
Total area: Connecticut: 5,544 square miles (14,358 km²) vs Wisconsin: 65,497 square miles (169,636 km²), including inland and coastal water. Wisconsin's total area is 11.8 times larger than Connecticut's.
Length: Connecticut is 73 miles (118 km) long from north to south; Wisconsin is 368 miles (593 km). Wisconsin's north-south length is 5.0 times (404%) longer than Connecticut's.
Width: Connecticut spans 104 miles (167 km) east to west; Wisconsin spans 323 miles (521 km). Wisconsin's east-west width is 3.1 times (211%) wider than Connecticut's.
Highest point: Connecticut's highest point is Mount Frissell (south slope) at 2,376 feet (724 m); Wisconsin's is Timms Hill at 1,946 feet (593 m). Mount Frissell (south slope) is 430 feet higher than Timms Hill.
Lowest point: Connecticut's lowest point is Long Island Sound at 0 feet; Wisconsin's is Lake Michigan at 577 feet. Connecticut's lowest point is 577 feet lower.
Connecticut vs Wisconsin Population and History
Population: Connecticut has a population of 3,675,069 (2024), while Wisconsin has 5,960,975 (2024). Wisconsin's population is 1.6 times (62%) larger than Connecticut's.
Population density: Connecticut: 758.9 people per square mile vs Wisconsin: 110.0. Connecticut's population density is 6.9 times (590%) higher than Wisconsin's.
Biggest city: Connecticut's biggest city is Bridgeport with 151,599 people; Wisconsin's is Milwaukee with 563,531. Milwaukee's population is 3.7 times (272%) larger than Bridgeport's.
Largest metro area: Connecticut's largest metropolitan area is Hartford-West Hartford-East Hartford, CT metro area (1,169,048 people) vs Wisconsin's Minneapolis-St. Paul-Bloomington, MN-WI metro area (3,757,952). Minneapolis-St. Paul-Bloomington, MN-WI metro area's population is 3.2 times (221%) larger than Hartford-West Hartford-East Hartford, CT metro area's.
History: Connecticut: Admitted to the Union on January 9, 1788, as the 5th state. Wisconsin: Admitted to the Union on May 29, 1848, as the 30th state. In its current form, Connecticut is the older of the two by 60 years.
Connecticut vs Wisconsin Economy
GDP: Connecticut's GDP is $356.8 billion (2024) vs Wisconsin's $453.3 billion. Wisconsin's economic output is 1.3 times (27%) larger than Connecticut's.
GDP per capita: Connecticut: $97,096 per person vs Wisconsin: $76,044. Connecticut's GDP per capita is 1.3 times (28%) higher than Wisconsin's.
Average income: Connecticut: $95,067 vs Wisconsin: $67,755 average income per person (per capita personal income). Connecticut's average income is 1.4 times (40%) higher than Wisconsin's.
Connecticut vs Wisconsin Counties
Number of counties: Connecticut has 9 counties, while Wisconsin has 72. Wisconsin's county count is 8.0 times (700%) higher than Connecticut's.
Biggest county by area: Connecticut's largest county is Capitol Planning Region at 1,027 square miles; Wisconsin's is Marathon County at 1,545 square miles. Marathon County's land area is 1.5 times (50%) larger than Capitol Planning Region's.
Smallest county by area: Connecticut: Greater Bridgeport Planning Region (140 sq mi) vs Wisconsin: Pepin County (232 sq mi). Pepin County's land area is 1.7 times (65%) larger than Greater Bridgeport Planning Region's.
Most populous county: Connecticut: Capitol Planning Region (991,508 people) vs Wisconsin: Milwaukee County (924,740 people). Capitol Planning Region's population is 1.1 times (7%) larger than Milwaukee County's.
Least populous county: Connecticut: Northeastern Connecticut Planning Region (97,701 people) vs Wisconsin: Menominee County (4,286 people). Northeastern Connecticut Planning Region's population is 22.8 times larger than Menominee County's.
Richest county: Connecticut: Western Connecticut Planning Region ($165,513 per capita income) vs Wisconsin: Ozaukee County ($109,947). Western Connecticut Planning Region's income is 1.5 times (51%) richer than Ozaukee County's.
Poorest county: Connecticut: Southeastern Connecticut Planning Region ($64,845 per capita income) vs Wisconsin: Menominee County ($43,696). Southeastern Connecticut Planning Region's income is 1.5 times (48%) richer than Menominee County's.
Connecticut vs Wisconsin Taxes
State income tax: Connecticut has a top income tax rate of 6.99%, while Wisconsin has a top income tax rate of 7.65%. Wisconsin's top rate is 0.66 percentage points higher.
Property tax: Connecticut: 1.66% effective rate vs Wisconsin: 1.25% of home value per year. Connecticut's rate is 0.41 percentage points higher.
Sales tax: Connecticut: 6.35% combined state and average local rate vs Wisconsin: 5.72%. Connecticut's combined rate is 0.63 percentage points higher.
Official Websites
Connecticut official website · Wisconsin official website
More Size Comparisons
All Connecticut 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.