The map above shows Delaware and Montana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Delaware vs Montana Geography
Land area: Delaware has a land area of 1,949 square miles (5,047 km²), while Montana has 145,550 square miles (376,973 km²). Montana's land area is 74.7 times larger than Delaware's.
Total area: Delaware: 2,489 square miles (6,446 km²) vs Montana: 147,043 square miles (380,840 km²), including inland and coastal water. Montana's total area is 59.1 times larger than Delaware's.
Length: Delaware is 98 miles (158 km) long from north to south; Montana is 319 miles (514 km). Montana's north-south length is 3.3 times (226%) longer than Delaware's.
Width: Delaware spans 96 miles (155 km) east to west; Montana spans 607 miles (976 km). Montana's east-west width is 6.3 times (532%) wider than Delaware's.
Highest point: Delaware's highest point is Ebright Azimuth at 450 feet (137 m); Montana's is Granite Peak at 12,767 feet (3,891 m). Granite Peak is 12,317 feet higher than Ebright Azimuth.
Lowest point: Delaware's lowest point is Atlantic Ocean at 0 feet; Montana's is Kootenai River at 1,805 feet. Delaware's lowest point is 1,805 feet lower.
Delaware vs Montana Population and History
Population: Delaware has a population of 1,051,917 (2024), while Montana has 1,137,233 (2024). Montana's population is 1.1 times (8%) larger than Delaware's.
Population density: Delaware: 539.9 people per square mile vs Montana: 7.8. Delaware's population density is 69.2 times higher than Montana's.
Biggest city: Delaware's biggest city is Wilmington with 73,176 people; Montana's is Billings with 121,483. Billings' population is 1.7 times (66%) larger than Wilmington's.
Largest metro area: Delaware's largest metropolitan area is Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area (6,330,422 people) vs Montana's Billings, MT metro area (192,531). Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area's population is 32.9 times larger than Billings, MT metro area's.
History: Delaware: Admitted to the Union on December 7, 1787, as the 1st state. Montana: Admitted to the Union on November 8, 1889, as the 41st state. In its current form, Delaware is the older of the two by 102 years.
Delaware vs Montana Economy
GDP: Delaware's GDP is $111.0 billion (2024) vs Montana's $78.4 billion. Delaware's economic output is 1.4 times (42%) larger than Montana's.
GDP per capita: Delaware: $105,495 per person vs Montana: $68,975. Delaware's GDP per capita is 1.5 times (53%) higher than Montana's.
Average income: Delaware: $68,061 vs Montana: $69,240 average income per person (per capita personal income). Delaware and Montana have about the same average income.
Delaware vs Montana Counties
Number of counties: Delaware has 3 counties, while Montana has 56. Montana's county count is 18.7 times higher than Delaware's.
Biggest county by area: Delaware's largest county is Sussex County at 936 square miles; Montana's is Beaverhead County at 5,543 square miles. Beaverhead County's land area is 5.9 times (492%) larger than Sussex County's.
Smallest county by area: Delaware: New Castle County (426 sq mi) vs Montana: Silver Bow County (718 sq mi). Silver Bow County's land area is 1.7 times (68%) larger than New Castle County's.
Most populous county: Delaware: New Castle County (588,093 people) vs Montana: Yellowstone County (171,583 people). New Castle County's population is 3.4 times (243%) larger than Yellowstone County's.
Least populous county: Delaware: Kent County (192,690 people) vs Montana: Petroleum County (525 people). Kent County's population is 367.0 times larger than Petroleum County's.
Richest county: Delaware: Sussex County ($73,647 per capita income) vs Montana: Gallatin County ($94,573). Gallatin County's income is 1.3 times (28%) richer than Sussex County's.
Poorest county: Delaware: Kent County ($55,474 per capita income) vs Montana: Blaine County ($37,554). Kent County's income is 1.5 times (48%) richer than Blaine County's.
Delaware vs Montana Taxes
State income tax: Delaware has a top income tax rate of 6.6%, while Montana has a top income tax rate of 5.65%. Delaware's top rate is 0.95 percentage points higher.
Property tax: Delaware: 0.47% effective rate vs Montana: 0.69% of home value per year. Montana's rate is 0.22 percentage points higher.
Sales tax: Delaware: 0% combined state and average local rate vs Montana: 0%. The two are essentially equal.
Official Websites
Delaware official website · Montana official website
More Size Comparisons
All Delaware size comparisons · All Montana 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.