The map above shows Maryland and New Jersey side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs New Jersey Geography
Land area
- Maryland has a land area of 9,711 square miles (25,151 km²), while New Jersey has 7,355 square miles (19,049 km²).
- Maryland's land area is 1.3 times (32%) larger than New Jersey's.
Total area
- Maryland: 12,406 square miles (32,131 km²) vs New Jersey: 8,719 square miles (22,583 km²), including inland and coastal water.
- Maryland's total area is 1.4 times (42%) larger than New Jersey's.
Length
- Maryland is 231 miles (371 km) long from north to south; New Jersey is 169 miles (271 km).
- Maryland's north-south length is 1.4 times (37%) longer than New Jersey's.
Width
- Maryland spans 243 miles (391 km) east to west; New Jersey spans 129 miles (207 km).
- Maryland's east-west width is 1.9 times (88%) wider than New Jersey's.
Highest point
- Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); New Jersey's is High Point at 1,798 feet (548 m).
- Hoye-Crest is 1,564 feet higher than High Point.
Lowest point
- Maryland's lowest point is Atlantic Ocean at 0 feet; New Jersey's is Atlantic Ocean at 0 feet.
- Both lowest points are at or near sea level.
Maryland vs New Jersey Population and History
Population
- Maryland has a population of 6,263,220 (2024), while New Jersey has 9,500,851 (2024).
- New Jersey's population is 1.5 times (52%) larger than Maryland's.
Population density
- Maryland: 645.0 people per square mile vs New Jersey: 1,291.8.
- New Jersey's population density is 2.0 times (100%) higher than Maryland's.
Biggest city
- Maryland's biggest city is Baltimore with 568,271 people; New Jersey's is Newark with 317,303.
- Baltimore's population is 1.8 times (79%) larger than Newark's.
Largest metro area
- Maryland's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs New Jersey's New York-Newark-Jersey City, NY-NJ metro area (19,940,274).
- New York-Newark-Jersey City, NY-NJ metro area's population is 3.1 times (210%) larger than Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's.
History
- Maryland: Admitted to the Union on April 28, 1788, as the 7th state.
- New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state.
- In its current form, New Jersey is the older of the two by 1 years.
Maryland vs New Jersey Economy
GDP
- Maryland's GDP is $546.0 billion (2024) vs New Jersey's $846.0 billion.
- New Jersey's economic output is 1.5 times (55%) larger than Maryland's.
GDP per capita
- Maryland: $87,180 per person vs New Jersey: $89,045.
- Maryland and New Jersey have about the same GDP per capita.
Average income
- Maryland: $79,259 vs New Jersey: $84,893 average income per person (per capita personal income).
- New Jersey's average income is 1.1 times (7%) higher than Maryland's.
Maryland vs New Jersey Counties
Number of counties
- Maryland has 24 counties, while New Jersey has 21.
- Maryland's county count is 1.1 times (14%) higher than New Jersey's.
Biggest county by area
- Maryland's largest county is Frederick County at 661 square miles; New Jersey's is Burlington County at 799 square miles.
- Burlington County's land area is 1.2 times (21%) larger than Frederick County's.
Smallest county by area
- Maryland: Baltimore city (81 sq mi) vs New Jersey: Hudson County (46 sq mi).
- Baltimore city's land area is 1.8 times (75%) larger than Hudson County's.
Most populous county
- Maryland: Montgomery County (1,082,273 people) vs New Jersey: Bergen County (978,641 people).
- Montgomery County's population is 1.1 times (11%) larger than Bergen County's.
Least populous county
- Maryland: Kent County (19,557 people) vs New Jersey: Salem County (65,874 people).
- Salem County's population is 3.4 times (237%) larger than Kent County's.
Richest county
- Maryland: Montgomery County ($104,882 per capita income) vs New Jersey: Somerset County ($121,042).
- Somerset County's income is 1.2 times (15%) richer than Montgomery County's.
Poorest county
- Maryland: Somerset County ($41,421 per capita income) vs New Jersey: Cumberland County ($50,843).
- Cumberland County's income is 1.2 times (23%) richer than Somerset County's.
Maryland vs New Jersey Taxes
State income tax
- Maryland has a top income tax rate of 6.5%, while New Jersey has a top income tax rate of 10.75%.
- New Jersey's top rate is 4.25 percentage points higher.
Property tax
- Maryland: 0.95% effective rate vs New Jersey: 1.89% of home value per year.
- New Jersey's rate is 0.94 percentage points higher.
Sales tax
- Maryland: 6% combined state and average local rate vs New Jersey: 6.6%.
- New Jersey's combined rate is 0.6 percentage points higher.
Official Websites
Maryland official website · New Jersey official website
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More Size Comparisons
All Maryland size comparisons · All New Jersey 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.