The map above shows Connecticut and Iowa side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Connecticut vs Iowa Geography
Land area: Connecticut has a land area of 4,843 square miles (12,542 km²), while Iowa has 55,854 square miles (144,660 km²). Iowa's land area is 11.5 times larger than Connecticut's.
Total area: Connecticut: 5,544 square miles (14,358 km²) vs Iowa: 56,273 square miles (145,746 km²), including inland and coastal water. Iowa's total area is 10.2 times larger than Connecticut's.
Length: Connecticut is 73 miles (118 km) long from north to south; Iowa is 216 miles (347 km). Iowa's north-south length is 3.0 times (196%) longer than Connecticut's.
Width: Connecticut spans 104 miles (167 km) east to west; Iowa spans 335 miles (539 km). Iowa's east-west width is 3.2 times (222%) wider than Connecticut's.
Highest point: Connecticut's highest point is Mount Frissell (south slope) at 2,376 feet (724 m); Iowa's is Hawkeye Point at 1,669 feet (509 m). Mount Frissell (south slope) is 707 feet higher than Hawkeye Point.
Lowest point: Connecticut's lowest point is Long Island Sound at 0 feet; Iowa's is Mississippi River at 480 feet. Connecticut's lowest point is 480 feet lower.
Connecticut vs Iowa Population and History
Population: Connecticut has a population of 3,675,069 (2024), while Iowa has 3,241,488 (2024). Connecticut's population is 1.1 times (13%) larger than Iowa's.
Population density: Connecticut: 758.9 people per square mile vs Iowa: 58.0. Connecticut's population density is 13.1 times higher than Iowa's.
Biggest city: Connecticut's biggest city is Bridgeport with 151,599 people; Iowa's is Des Moines with 213,096. Des Moines' population is 1.4 times (41%) 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 Iowa's Omaha, NE-IA metro area (1,001,010). Hartford-West Hartford-East Hartford, CT metro area's population is 1.2 times (17%) larger than Omaha, NE-IA metro area's.
History: Connecticut: Admitted to the Union on January 9, 1788, as the 5th state. Iowa: Admitted to the Union on December 28, 1846, as the 29th state. In its current form, Connecticut is the older of the two by 58 years.
Connecticut vs Iowa Economy
GDP: Connecticut's GDP is $356.8 billion (2024) vs Iowa's $265.8 billion. Connecticut's economic output is 1.3 times (34%) larger than Iowa's.
GDP per capita: Connecticut: $97,096 per person vs Iowa: $81,998. Connecticut's GDP per capita is 1.2 times (18%) higher than Iowa's.
Average income: Connecticut: $95,067 vs Iowa: $65,225 average income per person (per capita personal income). Connecticut's average income is 1.5 times (46%) higher than Iowa's.
Connecticut vs Iowa Counties
Number of counties: Connecticut has 9 counties, while Iowa has 99. Iowa's county count is 11.0 times higher than Connecticut's.
Biggest county by area: Connecticut's largest county is Capitol Planning Region at 1,027 square miles; Iowa's is Kossuth County at 973 square miles. Capitol Planning Region's land area is 1.1 times (6%) larger than Kossuth County's.
Smallest county by area: Connecticut: Greater Bridgeport Planning Region (140 sq mi) vs Iowa: Dickinson County (381 sq mi). Dickinson County's land area is 2.7 times (171%) larger than Greater Bridgeport Planning Region's.
Most populous county: Connecticut: Capitol Planning Region (991,508 people) vs Iowa: Polk County (516,185 people). Capitol Planning Region's population is 1.9 times (92%) larger than Polk County's.
Least populous county: Connecticut: Northeastern Connecticut Planning Region (97,701 people) vs Iowa: Adams County (3,606 people). Northeastern Connecticut Planning Region's population is 27.1 times larger than Adams County's.
Richest county: Connecticut: Western Connecticut Planning Region ($165,513 per capita income) vs Iowa: Mitchell County ($98,211). Western Connecticut Planning Region's income is 1.7 times (69%) richer than Mitchell County's.
Poorest county: Connecticut: Southeastern Connecticut Planning Region ($64,845 per capita income) vs Iowa: Decatur County ($46,134). Southeastern Connecticut Planning Region's income is 1.4 times (41%) richer than Decatur County's.
Connecticut vs Iowa Taxes
State income tax: Connecticut has a top income tax rate of 6.99%, while Iowa has a top income tax rate of 3.8%. Connecticut's top rate is 3.19 percentage points higher.
Property tax: Connecticut: 1.66% effective rate vs Iowa: 1.29% of home value per year. Connecticut's rate is 0.37 percentage points higher.
Sales tax: Connecticut: 6.35% combined state and average local rate vs Iowa: 6.94%. Iowa's combined rate is 0.59 percentage points higher.
Official Websites
Connecticut official website · Iowa official website
More Size Comparisons
All Connecticut size comparisons · All Iowa 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.