The map above shows Illinois and Mexico side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs Mexico Geography
Land area: Illinois has a land area of 55,513 square miles (143,778 km²), while Mexico has 750,561 square miles (1,943,945 km²). Mexico's land area is 13.5 times larger than Illinois'.
Total area: Illinois: 57,913 square miles (149,995 km²) vs Mexico: 758,449 square miles (1,964,375 km²), including inland and coastal water. Mexico's total area is 13.1 times larger than Illinois'.
Length: Illinois is 390 miles (628 km) long from north to south; Mexico is 1,890 miles (3,041 km). Mexico's north-south length is 4.8 times (385%) longer than Illinois'.
Width: Illinois spans 283 miles (456 km) east to west; Mexico spans 2,021 miles (3,252 km). Mexico's east-west width is 7.1 times (614%) wider than Illinois'.
Highest point: Illinois's highest point is Charles Mound at 1,232 feet (376 m); Mexico's is Pico de Orizaba at 18,491 feet (5,636 m). Pico de Orizaba is 17,259 feet higher than Charles Mound.
Lowest point: Illinois's lowest point is Mississippi River at 292 feet; Mexico's is Laguna Salada at -33 feet. Mexico's lowest point is 325 feet lower.
Illinois vs Mexico Population and History
Population: Illinois has a population of 12,710,158 (2024), while Mexico has 131,231,919 (2026). Mexico's population is 10.3 times larger than Illinois'.
Population density: Illinois: 229.0 people per square mile vs Mexico: 174.8. Illinois' population density is 1.3 times (31%) higher than Mexico's.
Biggest city: Illinois's biggest city is Chicago with 2,721,308 people; Mexico's is Mexico City with 9,209,944. Mexico City's population is 3.4 times (238%) 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 Mexico's Mexico City (17,734,212). Mexico City's population is 1.9 times (88%) larger than Chicago-Naperville-Elgin, IL-IN metro area's.
History: Illinois: Admitted to the Union on December 3, 1818, as the 21st state. Mexico: Independent from Spain since September 27, 1821. In its current form, Illinois is the older of the two by 3 years.
Illinois vs Mexico Economy
GDP: Illinois's GDP is $1,148.1 billion (2024) vs Mexico's $1,832.6 billion. Mexico's economic output is 1.6 times (60%) larger than Illinois'.
GDP per capita: Illinois: $90,330 per person vs Mexico: $13,889. Illinois' GDP per capita is 6.5 times (550%) higher than Mexico's.
Average income: Illinois: $74,522 vs Mexico: $13,730 average income per person (per capita personal income). Illinois' average income is 5.4 times (443%) higher than Mexico's.
Official Websites
Illinois official website · Mexico official website
More Size Comparisons
All Illinois size comparisons · All Mexico 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.