The map above shows Illinois and Vermont side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs Vermont Geography
Land area: Illinois has a land area of 55,513 square miles (143,778 km²), while Vermont has 9,217 square miles (23,873 km²). Illinois' land area is 6.0 times (502%) larger than Vermont's.
Total area: Illinois: 57,913 square miles (149,995 km²) vs Vermont: 9,615 square miles (24,903 km²), including inland and coastal water. Illinois' total area is 6.0 times (502%) larger than Vermont's.
Length: Illinois is 390 miles (628 km) long from north to south; Vermont is 165 miles (265 km). Illinois' north-south length is 2.4 times (136%) longer than Vermont's.
Width: Illinois spans 283 miles (456 km) east to west; Vermont spans 113 miles (181 km). Illinois' east-west width is 2.5 times (150%) wider than Vermont's.
Highest point: Illinois's highest point is Charles Mound at 1,232 feet (376 m); Vermont's is Mount Mansfield at 4,384 feet (1,336 m). Mount Mansfield is 3,152 feet higher than Charles Mound.
Lowest point: Illinois's lowest point is Mississippi River at 292 feet; Vermont's is Lake Champlain at 95 feet. Vermont's lowest point is 197 feet lower.
Illinois vs Vermont Population and History
Population: Illinois has a population of 12,710,158 (2024), while Vermont has 648,493 (2024). Illinois' population is 19.6 times larger than Vermont's.
Population density: Illinois: 229.0 people per square mile vs Vermont: 70.4. Illinois' population density is 3.3 times (225%) higher than Vermont's.
Biggest city: Illinois's biggest city is Chicago with 2,721,308 people; Vermont's is Burlington with 44,432. Chicago's population is 61.2 times larger than Burlington's.
Largest metro area: Illinois's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs Vermont's Burlington-South Burlington, VT metro area (229,445). Chicago-Naperville-Elgin, IL-IN metro area's population is 41.0 times larger than Burlington-South Burlington, VT metro area's.
History: Illinois: Admitted to the Union on December 3, 1818, as the 21st state. Vermont: Admitted to the Union on March 4, 1791, as the 14th state. In its current form, Vermont is the older of the two by 27 years.
Illinois vs Vermont Economy
GDP: Illinois's GDP is $1,148.1 billion (2024) vs Vermont's $46.3 billion. Illinois' economic output is 24.8 times larger than Vermont's.
GDP per capita: Illinois: $90,330 per person vs Vermont: $71,359. Illinois' GDP per capita is 1.3 times (27%) higher than Vermont's.
Average income: Illinois: $74,522 vs Vermont: $71,287 average income per person (per capita personal income). Illinois and Vermont have about the same average income.
Illinois vs Vermont Counties
Number of counties: Illinois has 102 counties, while Vermont has 14. Illinois' county count is 7.3 times (629%) higher than Vermont's.
Biggest county by area: Illinois's largest county is McLean County at 1,183 square miles; Vermont's is Windsor County at 969 square miles. McLean County's land area is 1.2 times (22%) larger than Windsor County's.
Smallest county by area: Illinois: Putnam County (160 sq mi) vs Vermont: Grand Isle County (82 sq mi). Putnam County's land area is 2.0 times (96%) larger than Grand Isle County's.
Most populous county: Illinois: Cook County (5,182,617 people) vs Vermont: Chittenden County (170,851 people). Cook County's population is 30.3 times larger than Chittenden County's.
Least populous county: Illinois: Hardin County (3,550 people) vs Vermont: Essex County (6,037 people). Essex County's population is 1.7 times (70%) larger than Hardin County's.
Richest county: Illinois: Cumberland County ($104,890 per capita income) vs Vermont: Chittenden County ($80,533). Cumberland County's income is 1.3 times (30%) richer than Chittenden County's.
Poorest county: Illinois: Lawrence County ($43,606 per capita income) vs Vermont: Essex County ($50,712). Essex County's income is 1.2 times (16%) richer than Lawrence County's.
Illinois vs Vermont Taxes
State income tax: Illinois has a top income tax rate of 4.95%, while Vermont has a top income tax rate of 8.75%. Vermont's top rate is 3.8 percentage points higher.
Property tax: Illinois: 1.92% effective rate vs Vermont: 1.42% of home value per year. Illinois's rate is 0.5 percentage points higher.
Sales tax: Illinois: 8.98% combined state and average local rate vs Vermont: 6.43%. Illinois's combined rate is 2.55 percentage points higher.
Official Websites
Illinois official website · Vermont official website
More Size Comparisons
All Illinois size comparisons · All Vermont 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.