The map above shows Delaware and Pennsylvania side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Delaware vs Pennsylvania Geography
Land area: Delaware has a land area of 1,949 square miles (5,047 km²), while Pennsylvania has 44,742 square miles (115,882 km²). Pennsylvania's land area is 23.0 times larger than Delaware's.
Total area: Delaware: 2,489 square miles (6,446 km²) vs Pennsylvania: 46,054 square miles (119,279 km²), including inland and coastal water. Pennsylvania's total area is 18.5 times larger than Delaware's.
Length: Delaware is 98 miles (158 km) long from north to south; Pennsylvania is 284 miles (458 km). Pennsylvania's north-south length is 2.9 times (190%) longer than Delaware's.
Width: Delaware spans 96 miles (155 km) east to west; Pennsylvania spans 307 miles (495 km). Pennsylvania's east-west width is 3.2 times (220%) wider than Delaware's.
Highest point: Delaware's highest point is Ebright Azimuth at 450 feet (137 m); Pennsylvania's is Mount Davis at 3,210 feet (978 m). Mount Davis is 2,760 feet higher than Ebright Azimuth.
Lowest point: Delaware's lowest point is Atlantic Ocean at 0 feet; Pennsylvania's is Delaware River at 0 feet. Both lowest points are at or near sea level.
Delaware vs Pennsylvania Population and History
Population: Delaware has a population of 1,051,917 (2024), while Pennsylvania has 13,078,751 (2024). Pennsylvania's population is 12.4 times larger than Delaware's.
Population density: Delaware: 539.9 people per square mile vs Pennsylvania: 292.3. Delaware's population density is 1.8 times (85%) higher than Pennsylvania's.
Biggest city: Delaware's biggest city is Wilmington with 73,176 people; Pennsylvania's is Philadelphia with 1,573,916. Philadelphia's population is 21.5 times 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 Pennsylvania's Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area (6,330,422). Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area and Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metro area have about the same population.
History: Delaware: Admitted to the Union on December 7, 1787, as the 1st state. Pennsylvania: Admitted to the Union on December 12, 1787, as the 2nd state.
Delaware vs Pennsylvania Economy
GDP: Delaware's GDP is $111.0 billion (2024) vs Pennsylvania's $1,007.9 billion. Pennsylvania's economic output is 9.1 times (808%) larger than Delaware's.
GDP per capita: Delaware: $105,495 per person vs Pennsylvania: $77,062. Delaware's GDP per capita is 1.4 times (37%) higher than Pennsylvania's.
Average income: Delaware: $68,061 vs Pennsylvania: $70,678 average income per person (per capita personal income). Delaware and Pennsylvania have about the same average income.
Delaware vs Pennsylvania Counties
Number of counties: Delaware has 3 counties, while Pennsylvania has 67. Pennsylvania's county count is 22.3 times higher than Delaware's.
Biggest county by area: Delaware's largest county is Sussex County at 936 square miles; Pennsylvania's is Lycoming County at 1,229 square miles. Lycoming County's land area is 1.3 times (31%) larger than Sussex County's.
Smallest county by area: Delaware: New Castle County (426 sq mi) vs Pennsylvania: Montour County (130 sq mi). New Castle County's land area is 3.3 times (227%) larger than Montour County's.
Most populous county: Delaware: New Castle County (588,093 people) vs Pennsylvania: Philadelphia County (1,573,916 people). Philadelphia County's population is 2.7 times (168%) larger than New Castle County's.
Least populous county: Delaware: Kent County (192,690 people) vs Pennsylvania: Cameron County (4,348 people). Kent County's population is 44.3 times larger than Cameron County's.
Richest county: Delaware: Sussex County ($73,647 per capita income) vs Pennsylvania: Chester County ($110,883). Chester County's income is 1.5 times (51%) richer than Sussex County's.
Poorest county: Delaware: Kent County ($55,474 per capita income) vs Pennsylvania: Forest County ($30,234). Kent County's income is 1.8 times (83%) richer than Forest County's.
Delaware vs Pennsylvania Taxes
State income tax: Delaware has a top income tax rate of 6.6%, while Pennsylvania has a top income tax rate of 3.07%. Delaware's top rate is 3.53 percentage points higher.
Property tax: Delaware: 0.47% effective rate vs Pennsylvania: 1.16% of home value per year. Pennsylvania's rate is 0.69 percentage points higher.
Sales tax: Delaware: 0% combined state and average local rate vs Pennsylvania: 6.34%. Pennsylvania's combined rate is 6.34 percentage points higher.
Official Websites
Delaware official website · Pennsylvania official website
More Size Comparisons
All Delaware size comparisons · All Pennsylvania 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.