The map above shows Maryland and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Maryland vs Oklahoma Geography
Land area: Maryland has a land area of 9,711 square miles (25,151 km²), while Oklahoma has 68,597 square miles (177,665 km²). Oklahoma's land area is 7.1 times (606%) larger than Maryland's.
Total area: Maryland: 12,406 square miles (32,131 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water. Oklahoma's total area is 5.6 times (463%) larger than Maryland's.
Length: Maryland is 231 miles (371 km) long from north to south; Oklahoma is 533 miles (857 km). Oklahoma's north-south length is 2.3 times (131%) longer than Maryland's.
Width: Maryland spans 243 miles (391 km) east to west; Oklahoma spans 490 miles (789 km). Oklahoma's east-west width is 2.0 times (102%) wider than Maryland's.
Highest point: Maryland's highest point is Hoye-Crest at 3,362 feet (1,025 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m). Black Mesa is 1,618 feet higher than Hoye-Crest.
Lowest point: Maryland's lowest point is Atlantic Ocean at 0 feet; Oklahoma's is Little River at 289 feet. Maryland's lowest point is 289 feet lower.
Maryland vs Oklahoma Population and History
Population: Maryland has a population of 6,263,220 (2024), while Oklahoma has 4,095,393 (2024). Maryland's population is 1.5 times (53%) larger than Oklahoma's.
Population density: Maryland: 645.0 people per square mile vs Oklahoma: 59.7. Maryland's population density is 10.8 times higher than Oklahoma's.
Biggest city: Maryland's biggest city is Baltimore with 568,271 people; Oklahoma's is Oklahoma City with 712,919. Oklahoma City's population is 1.3 times (25%) larger than Baltimore's.
Largest metro area: Maryland's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs Oklahoma's Oklahoma City, OK metro area (1,497,821). Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 4.3 times (330%) larger than Oklahoma City, OK metro area's.
History: Maryland: Admitted to the Union on April 28, 1788, as the 7th state. Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state. In its current form, Maryland is the older of the two by 119 years.
Maryland vs Oklahoma Economy
GDP: Maryland's GDP is $546.0 billion (2024) vs Oklahoma's $263.7 billion. Maryland's economic output is 2.1 times (107%) larger than Oklahoma's.
GDP per capita: Maryland: $87,180 per person vs Oklahoma: $64,388. Maryland's GDP per capita is 1.4 times (35%) higher than Oklahoma's.
Average income: Maryland: $79,259 vs Oklahoma: $63,708 average income per person (per capita personal income). Maryland's average income is 1.2 times (24%) higher than Oklahoma's.
Maryland vs Oklahoma Counties
Number of counties: Maryland has 24 counties, while Oklahoma has 77. Oklahoma's county count is 3.2 times (221%) higher than Maryland's.
Biggest county by area: Maryland's largest county is Frederick County at 661 square miles; Oklahoma's is Osage County at 2,247 square miles. Osage County's land area is 3.4 times (240%) larger than Frederick County's.
Smallest county by area: Maryland: Baltimore city (81 sq mi) vs Oklahoma: Marshall County (372 sq mi). Marshall County's land area is 4.6 times (359%) larger than Baltimore city's.
Most populous county: Maryland: Montgomery County (1,082,273 people) vs Oklahoma: Oklahoma County (816,490 people). Montgomery County's population is 1.3 times (33%) larger than Oklahoma County's.
Least populous county: Maryland: Kent County (19,557 people) vs Oklahoma: Cimarron County (2,133 people). Kent County's population is 9.2 times (817%) larger than Cimarron County's.
Richest county: Maryland: Montgomery County ($104,882 per capita income) vs Oklahoma: Washington County ($126,749). Washington County's income is 1.2 times (21%) richer than Montgomery County's.
Poorest county: Maryland: Somerset County ($41,421 per capita income) vs Oklahoma: Atoka County ($38,709). Somerset County's income is 1.1 times (7%) richer than Atoka County's.
Maryland vs Oklahoma Taxes
State income tax: Maryland has a top income tax rate of 6.5%, while Oklahoma has a top income tax rate of 4.5%. Maryland's top rate is 2 percentage points higher.
Property tax: Maryland: 0.95% effective rate vs Oklahoma: 0.75% of home value per year. Maryland's rate is 0.2 percentage points higher.
Sales tax: Maryland: 6% combined state and average local rate vs Oklahoma: 9.06%. Oklahoma's combined rate is 3.06 percentage points higher.
Official Websites
Maryland official website · Oklahoma official website
More Size Comparisons
All Maryland size comparisons · All Oklahoma 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.