The map above shows Illinois and New Brunswick side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs New Brunswick Geography
Land area: Illinois has a land area of 55,513 square miles (143,778 km²), while New Brunswick has 27,587 square miles (71,450 km²). Illinois' land area is 2.0 times (101%) larger than New Brunswick's.
Total area: Illinois: 57,913 square miles (149,995 km²) vs New Brunswick: 28,150 square miles (72,908 km²), including inland and coastal water. Illinois' total area is 2.1 times (106%) larger than New Brunswick's.
Length: Illinois is 390 miles (628 km) long from north to south; New Brunswick is 241 miles (388 km). Illinois' north-south length is 1.6 times (62%) longer than New Brunswick's.
Width: Illinois spans 283 miles (456 km) east to west; New Brunswick spans 264 miles (424 km). Illinois' east-west width is 1.1 times (7%) wider than New Brunswick's.
Highest point: Illinois's highest point is Charles Mound at 1,232 feet (376 m); New Brunswick's is Mount Carleton at 2,680 feet (817 m). Mount Carleton is 1,448 feet higher than Charles Mound.
Lowest point: Illinois's lowest point is Mississippi River at 292 feet; New Brunswick's is Atlantic Ocean at 0 feet. New Brunswick's lowest point is 292 feet lower.
Illinois vs New Brunswick Population and History
Population: Illinois has a population of 12,710,158 (2024), while New Brunswick has 867,383 (2026). Illinois' population is 14.7 times larger than New Brunswick's.
Population density: Illinois: 229.0 people per square mile vs New Brunswick: 31.4. Illinois' population density is 7.3 times (629%) higher than New Brunswick's.
Biggest city: Illinois's biggest city is Chicago with 2,721,308 people; New Brunswick's is Moncton with 79,470. Chicago's population is 34.2 times larger than Moncton's.
Largest metro area: Illinois's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs New Brunswick's Moncton CMA (157,717). Chicago-Naperville-Elgin, IL-IN metro area's population is 59.7 times larger than Moncton CMA's.
History: Illinois: Admitted to the Union on December 3, 1818, as the 21st state. New Brunswick: Joined Confederation on July 1, 1867, as one of the four founding provinces. In its current form, Illinois is the older of the two by 49 years.
Illinois vs New Brunswick Economy
GDP: Illinois's GDP is $1,148.1 billion (2024) vs New Brunswick's $35.3 billion. Illinois' economic output is 32.5 times larger than New Brunswick's.
GDP per capita: Illinois: $90,330 per person vs New Brunswick: $41,088. Illinois' GDP per capita is 2.2 times (120%) higher than New Brunswick's.
Official Websites
Illinois official website · New Brunswick official website
More Size Comparisons
All Illinois size comparisons · All New Brunswick 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.