The map above shows Arizona and Maryland side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs Maryland Geography
Land area: Arizona has a land area of 113,655 square miles (294,366 km²), while Maryland has 9,711 square miles (25,151 km²). Arizona's land area is 11.7 times larger than Maryland's.
Total area: Arizona: 113,985 square miles (295,220 km²) vs Maryland: 12,406 square miles (32,131 km²), including inland and coastal water. Arizona's total area is 9.2 times (819%) larger than Maryland's.
Length: Arizona is 429 miles (690 km) long from north to south; Maryland is 231 miles (371 km). Arizona's north-south length is 1.9 times (86%) longer than Maryland's.
Width: Arizona spans 452 miles (727 km) east to west; Maryland spans 243 miles (391 km). Arizona's east-west width is 1.9 times (86%) wider than Maryland's.
Highest point: Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); Maryland's is Hoye-Crest at 3,362 feet (1,025 m). Humphreys Peak is 9,258 feet higher than Hoye-Crest.
Lowest point: Arizona's lowest point is Colorado River at 71 feet; Maryland's is Atlantic Ocean at 0 feet. Maryland's lowest point is 71 feet lower.
Arizona vs Maryland Population and History
Population: Arizona has a population of 7,582,384 (2024), while Maryland has 6,263,220 (2024). Arizona's population is 1.2 times (21%) larger than Maryland's.
Population density: Arizona: 66.7 people per square mile vs Maryland: 645.0. Maryland's population density is 9.7 times (867%) higher than Arizona's.
Biggest city: Arizona's biggest city is Phoenix with 1,673,164 people; Maryland's is Baltimore with 568,271. Phoenix's population is 2.9 times (194%) larger than Baltimore's.
Largest metro area: Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs Maryland's Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489). Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 1.2 times (24%) larger than Phoenix-Mesa-Chandler, AZ metro area's.
History: Arizona: Admitted to the Union on February 14, 1912, as the 48th state. Maryland: Admitted to the Union on April 28, 1788, as the 7th state. In its current form, Maryland is the older of the two by 124 years.
Arizona vs Maryland Economy
GDP: Arizona's GDP is $570.1 billion (2024) vs Maryland's $546.0 billion. Arizona and Maryland have about the same economic output.
GDP per capita: Arizona: $75,186 per person vs Maryland: $87,180. Maryland's GDP per capita is 1.2 times (16%) higher than Arizona's.
Average income: Arizona: $65,798 vs Maryland: $79,259 average income per person (per capita personal income). Maryland's average income is 1.2 times (20%) higher than Arizona's.
Arizona vs Maryland Counties
Number of counties: Arizona has 15 counties, while Maryland has 24. Maryland's county count is 1.6 times (60%) higher than Arizona's.
Biggest county by area: Arizona's largest county is Coconino County at 18,616 square miles; Maryland's is Frederick County at 661 square miles. Coconino County's land area is 28.2 times larger than Frederick County's.
Smallest county by area: Arizona: Santa Cruz County (1,236 sq mi) vs Maryland: Baltimore city (81 sq mi). Santa Cruz County's land area is 15.3 times larger than Baltimore city's.
Most populous county: Arizona: Maricopa County (4,673,096 people) vs Maryland: Montgomery County (1,082,273 people). Maricopa County's population is 4.3 times (332%) larger than Montgomery County's.
Least populous county: Arizona: Greenlee County (9,410 people) vs Maryland: Kent County (19,557 people). Kent County's population is 2.1 times (108%) larger than Greenlee County's.
Richest county: Arizona: Maricopa County ($72,176 per capita income) vs Maryland: Montgomery County ($104,882). Montgomery County's income is 1.5 times (45%) richer than Maricopa County's.
Poorest county: Arizona: Graham County ($44,164 per capita income) vs Maryland: Somerset County ($41,421). Graham County's income is 1.1 times (7%) richer than Somerset County's.
Arizona vs Maryland Taxes
State income tax: Arizona has a top income tax rate of 2.5%, while Maryland has a top income tax rate of 6.5%. Maryland's top rate is 4 percentage points higher.
Property tax: Arizona: 0.43% effective rate vs Maryland: 0.95% of home value per year. Maryland's rate is 0.52 percentage points higher.
Sales tax: Arizona: 8.54% combined state and average local rate vs Maryland: 6%. Arizona's combined rate is 2.54 percentage points higher.
Official Websites
Arizona official website · Maryland official website
More Size Comparisons
All Arizona size comparisons · All Maryland 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.