The map above shows Illinois and New York side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs New York Geography
Land area
- Illinois has a land area of 55,513 square miles (143,778 km²), while New York has 47,123 square miles (122,049 km²).
- Illinois' land area is 1.2 times (18%) larger than New York's.
Total area
- Illinois: 57,913 square miles (149,995 km²) vs New York: 54,559 square miles (141,306 km²), including inland and coastal water.
- Illinois' total area is 1.1 times (6%) larger than New York's.
Length
- Illinois is 390 miles (628 km) long from north to south; New York is 312 miles (503 km).
- Illinois' north-south length is 1.3 times (25%) longer than New York's.
Width
- Illinois spans 283 miles (456 km) east to west; New York spans 415 miles (668 km).
- New York's east-west width is 1.5 times (47%) wider than Illinois'.
Highest point
- Illinois's highest point is Charles Mound at 1,232 feet (376 m); New York's is Mount Marcy at 5,335 feet (1,626 m).
- Mount Marcy is 4,103 feet higher than Charles Mound.
Lowest point
- Illinois's lowest point is Mississippi River at 292 feet; New York's is Atlantic Ocean at 0 feet.
- New York's lowest point is 292 feet lower.
Illinois vs New York Population and History
Population
- Illinois has a population of 12,710,158 (2024), while New York has 19,867,248 (2024).
- New York's population is 1.6 times (56%) larger than Illinois'.
Population density
- Illinois: 229.0 people per square mile vs New York: 421.6.
- New York's population density is 1.8 times (84%) higher than Illinois'.
Biggest city
- Illinois's biggest city is Chicago with 2,721,308 people; New York's is New York with 8,478,072.
- New York's population is 3.1 times (212%) larger than Chicago's.
Largest metro area
- Illinois's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs New York'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 2.1 times (112%) larger than Chicago-Naperville-Elgin, IL-IN metro area's.
History
- Illinois: Admitted to the Union on December 3, 1818, as the 21st state.
- New York: Admitted to the Union on July 26, 1788, as the 11th state.
- In its current form, New York is the older of the two by 30 years.
Illinois vs New York Economy
GDP
- Illinois's GDP is $1,148.1 billion (2024) vs New York's $2,322.1 billion.
- New York's economic output is 2.0 times (102%) larger than Illinois'.
GDP per capita
- Illinois: $90,330 per person vs New York: $116,883.
- New York's GDP per capita is 1.3 times (29%) higher than Illinois'.
Average income
- Illinois: $74,522 vs New York: $85,552 average income per person (per capita personal income).
- New York's average income is 1.1 times (15%) higher than Illinois'.
Illinois vs New York Counties
Number of counties
- Illinois has 102 counties, while New York has 62.
- Illinois' county count is 1.6 times (65%) higher than New York's.
Biggest county by area
- Illinois's largest county is McLean County at 1,183 square miles; New York's is St. Lawrence County at 2,680 square miles.
- St. Lawrence County's land area is 2.3 times (126%) larger than McLean County's.
Smallest county by area
- Illinois: Putnam County (160 sq mi) vs New York: New York County (23 sq mi).
- Putnam County's land area is 7.1 times (605%) larger than New York County's.
Most populous county
- Illinois: Cook County (5,182,617 people) vs New York: Kings County (2,617,631 people).
- Cook County's population is 2.0 times (98%) larger than Kings County's.
Least populous county
- Illinois: Hardin County (3,550 people) vs New York: Hamilton County (5,082 people).
- Hamilton County's population is 1.4 times (43%) larger than Hardin County's.
Richest county
- Illinois: Cumberland County ($104,890 per capita income) vs New York: New York County ($217,075).
- New York County's income is 2.1 times (107%) richer than Cumberland County's.
Poorest county
- Illinois: Lawrence County ($43,606 per capita income) vs New York: Allegany County ($44,689).
- Lawrence County and Allegany County have about the same income.
Illinois vs New York Taxes
State income tax
- Illinois has a top income tax rate of 4.95%, while New York has a top income tax rate of 10.9%.
- New York's top rate is 5.95 percentage points higher.
Property tax
- Illinois: 1.92% effective rate vs New York: 1.45% of home value per year.
- Illinois's rate is 0.47 percentage points higher.
Sales tax
- Illinois: 8.98% combined state and average local rate vs New York: 8.54%.
- Illinois's combined rate is 0.44 percentage points higher.
Official Websites
Illinois official website · New York official website
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More Size Comparisons
All Illinois size comparisons · All New York 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.