The map above shows Illinois and Texas side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Illinois vs Texas Geography
Land area
- Illinois has a land area of 55,513 square miles (143,778 km²), while Texas has 261,259 square miles (676,657 km²).
- Texas' land area is 4.7 times (371%) larger than Illinois'.
Total area
- Illinois: 57,913 square miles (149,995 km²) vs Texas: 268,599 square miles (695,668 km²), including inland and coastal water.
- Texas' total area is 4.6 times (364%) larger than Illinois'.
Length
- Illinois is 390 miles (628 km) long from north to south; Texas is 808 miles (1,300 km).
- Texas' north-south length is 2.1 times (107%) longer than Illinois'.
Width
- Illinois spans 283 miles (456 km) east to west; Texas spans 777 miles (1,250 km).
- Texas' east-west width is 2.7 times (175%) wider than Illinois'.
Highest point
- Illinois's highest point is Charles Mound at 1,232 feet (376 m); Texas's is Guadalupe Peak at 8,730 feet (2,661 m).
- Guadalupe Peak is 7,498 feet higher than Charles Mound.
Lowest point
- Illinois's lowest point is Mississippi River at 292 feet; Texas's is Gulf of Mexico at 0 feet.
- Texas's lowest point is 292 feet lower.
Illinois vs Texas Population and History
Population
- Illinois has a population of 12,710,158 (2024), while Texas has 31,290,831 (2024).
- Texas' population is 2.5 times (146%) larger than Illinois'.
Population density
- Illinois: 229.0 people per square mile vs Texas: 119.8.
- Illinois' population density is 1.9 times (91%) higher than Texas'.
Biggest city
- Illinois's biggest city is Chicago with 2,721,308 people; Texas's is Houston with 2,390,125.
- Chicago's population is 1.1 times (14%) larger than Houston's.
Largest metro area
- Illinois's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs Texas's Dallas-Fort Worth-Arlington, TX metro area (8,344,032).
- Chicago-Naperville-Elgin, IL-IN metro area's population is 1.1 times (13%) larger than Dallas-Fort Worth-Arlington, TX metro area's.
History
- Illinois: Admitted to the Union on December 3, 1818, as the 21st state.
- Texas: Admitted to the Union on December 29, 1845, as the 28th state.
- In its current form, Illinois is the older of the two by 27 years.
Illinois vs Texas Economy
GDP
- Illinois's GDP is $1,148.1 billion (2024) vs Texas's $2,769.8 billion.
- Texas' economic output is 2.4 times (141%) larger than Illinois'.
GDP per capita
- Illinois: $90,330 per person vs Texas: $88,517.
- Illinois and Texas have about the same GDP per capita.
Average income
- Illinois: $74,522 vs Texas: $69,823 average income per person (per capita personal income).
- Illinois' average income is 1.1 times (7%) higher than Texas'.
Illinois vs Texas Counties
Number of counties
- Illinois has 102 counties, while Texas has 254.
- Texas' county count is 2.5 times (149%) higher than Illinois'.
Biggest county by area
- Illinois's largest county is McLean County at 1,183 square miles; Texas's is Brewster County at 6,184 square miles.
- Brewster County's land area is 5.2 times (423%) larger than McLean County's.
Smallest county by area
- Illinois: Putnam County (160 sq mi) vs Texas: Rockwall County (127 sq mi).
- Putnam County's land area is 1.3 times (26%) larger than Rockwall County's.
Most populous county
- Illinois: Cook County (5,182,617 people) vs Texas: Harris County (5,009,302 people).
- Cook County and Harris County have about the same population.
Least populous county
- Illinois: Hardin County (3,550 people) vs Texas: Loving County (48 people).
- Hardin County's population is 74.0 times larger than Loving County's.
Richest county
- Illinois: Cumberland County ($104,890 per capita income) vs Texas: Loving County ($220,625).
- Loving County's income is 2.1 times (110%) richer than Cumberland County's.
Poorest county
- Illinois: Lawrence County ($43,606 per capita income) vs Texas: Starr County ($34,180).
- Lawrence County's income is 1.3 times (28%) richer than Starr County's.
Illinois vs Texas Taxes
State income tax
- Illinois has a top income tax rate of 4.95%, while Texas has no state income tax.
- Illinois's top rate is 4.95 percentage points higher.
Property tax
- Illinois: 1.92% effective rate vs Texas: 1.31% of home value per year.
- Illinois's rate is 0.61 percentage points higher.
Sales tax
- Illinois: 8.98% combined state and average local rate vs Texas: 8.2%.
- Illinois's combined rate is 0.78 percentage points higher.
Official Websites
Illinois official website · Texas official website
Download the Illinois vs Texas Size Comparison Map for free
To download the map, right-click the image above (or press and hold on a phone or tablet) and choose Save image as. The map is free to use anywhere, including on your own website or in print, as long as you credit it with a link back to this page or to BrilliantMaps.com.
More Size Comparisons
All Illinois size comparisons · All Texas 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.