The map above shows Arizona and Missouri side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs Missouri Geography
Land area: Arizona has a land area of 113,655 square miles (294,366 km²), while Missouri has 68,746 square miles (178,052 km²). Arizona's land area is 1.7 times (65%) larger than Missouri's.
Total area: Arizona: 113,985 square miles (295,220 km²) vs Missouri: 69,707 square miles (180,540 km²), including inland and coastal water. Arizona's total area is 1.6 times (64%) larger than Missouri's.
Length: Arizona is 429 miles (690 km) long from north to south; Missouri is 328 miles (529 km). Arizona's north-south length is 1.3 times (31%) longer than Missouri's.
Width: Arizona spans 452 miles (727 km) east to west; Missouri spans 437 miles (703 km). Arizona and Missouri have about the same east-west width.
Highest point: Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); Missouri's is Taum Sauk Mountain at 1,771 feet (540 m). Humphreys Peak is 10,849 feet higher than Taum Sauk Mountain.
Lowest point: Arizona's lowest point is Colorado River at 71 feet; Missouri's is St. Francis River at 230 feet. Arizona's lowest point is 159 feet lower.
Arizona vs Missouri Population and History
Population: Arizona has a population of 7,582,384 (2024), while Missouri has 6,245,466 (2024). Arizona's population is 1.2 times (21%) larger than Missouri's.
Population density: Arizona: 66.7 people per square mile vs Missouri: 90.8. Missouri's population density is 1.4 times (36%) higher than Arizona's.
Biggest city: Arizona's biggest city is Phoenix with 1,673,164 people; Missouri's is Kansas City with 516,032. Phoenix's population is 3.2 times (224%) larger than Kansas City's.
Largest metro area: Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs Missouri's St. Louis, MO-IL metro area (2,811,927). Phoenix-Mesa-Chandler, AZ metro area's population is 1.8 times (84%) larger than St. Louis, MO-IL metro area's.
History: Arizona: Admitted to the Union on February 14, 1912, as the 48th state. Missouri: Admitted to the Union on August 10, 1821, as the 24th state. In its current form, Missouri is the older of the two by 91 years.
Arizona vs Missouri Economy
GDP: Arizona's GDP is $570.1 billion (2024) vs Missouri's $448.7 billion. Arizona's economic output is 1.3 times (27%) larger than Missouri's.
GDP per capita: Arizona: $75,186 per person vs Missouri: $71,846. Arizona and Missouri have about the same GDP per capita.
Average income: Arizona: $65,798 vs Missouri: $64,920 average income per person (per capita personal income). Arizona and Missouri have about the same average income.
Arizona vs Missouri Counties
Number of counties: Arizona has 15 counties, while Missouri has 115. Missouri's county count is 7.7 times (667%) higher than Arizona's.
Biggest county by area: Arizona's largest county is Coconino County at 18,616 square miles; Missouri's is Texas County at 1,177 square miles. Coconino County's land area is 15.8 times larger than Texas County's.
Smallest county by area: Arizona: Santa Cruz County (1,236 sq mi) vs Missouri: St. Louis city (62 sq mi). Santa Cruz County's land area is 20.0 times larger than St. Louis city's.
Most populous county: Arizona: Maricopa County (4,673,096 people) vs Missouri: St. Louis County (992,929 people). Maricopa County's population is 4.7 times (371%) larger than St. Louis County's.
Least populous county: Arizona: Greenlee County (9,410 people) vs Missouri: Worth County (1,872 people). Greenlee County's population is 5.0 times (403%) larger than Worth County's.
Richest county: Arizona: Maricopa County ($72,176 per capita income) vs Missouri: St. Louis County ($104,775). St. Louis County's income is 1.5 times (45%) richer than Maricopa County's.
Poorest county: Arizona: Graham County ($44,164 per capita income) vs Missouri: Douglas County ($40,515). Graham County's income is 1.1 times (9%) richer than Douglas County's.
Arizona vs Missouri Taxes
State income tax: Arizona has a top income tax rate of 2.5%, while Missouri has a top income tax rate of 4.7%. Missouri's top rate is 2.2 percentage points higher.
Property tax: Arizona: 0.43% effective rate vs Missouri: 0.79% of home value per year. Missouri's rate is 0.36 percentage points higher.
Sales tax: Arizona: 8.54% combined state and average local rate vs Missouri: 8.44%. Arizona's combined rate is 0.1 percentage points higher.
Official Websites
Arizona official website · Missouri official website
More Size Comparisons
All Arizona size comparisons · All Missouri 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.