The map above shows Arizona and Montana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs Montana Geography
Land area
- Arizona has a land area of 113,655 square miles (294,366 km²), while Montana has 145,550 square miles (376,973 km²).
- Montana's land area is 1.3 times (28%) larger than Arizona's.
Total area
- Arizona: 113,985 square miles (295,220 km²) vs Montana: 147,043 square miles (380,840 km²), including inland and coastal water.
- Montana's total area is 1.3 times (29%) larger than Arizona's.
Length
- Arizona is 429 miles (690 km) long from north to south; Montana is 319 miles (514 km).
- Arizona's north-south length is 1.3 times (34%) longer than Montana's.
Width
- Arizona spans 452 miles (727 km) east to west; Montana spans 607 miles (976 km).
- Montana's east-west width is 1.3 times (34%) wider than Arizona's.
Highest point
- Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); Montana's is Granite Peak at 12,767 feet (3,891 m).
- Granite Peak is 147 feet higher than Humphreys Peak.
Lowest point
- Arizona's lowest point is Colorado River at 71 feet; Montana's is Kootenai River at 1,805 feet.
- Arizona's lowest point is 1,734 feet lower.
Arizona vs Montana Population and History
Population
- Arizona has a population of 7,582,384 (2024), while Montana has 1,137,233 (2024).
- Arizona's population is 6.7 times (567%) larger than Montana's.
Population density
- Arizona: 66.7 people per square mile vs Montana: 7.8.
- Arizona's population density is 8.6 times (755%) higher than Montana's.
Biggest city
- Arizona's biggest city is Phoenix with 1,673,164 people; Montana's is Billings with 121,483.
- Phoenix's population is 13.8 times larger than Billings'.
Largest metro area
- Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs Montana's Billings, MT metro area (192,531).
- Phoenix-Mesa-Chandler, AZ metro area's population is 26.9 times larger than Billings, MT metro area's.
History
- Arizona: Admitted to the Union on February 14, 1912, as the 48th state.
- Montana: Admitted to the Union on November 8, 1889, as the 41st state.
- In its current form, Montana is the older of the two by 23 years.
Arizona vs Montana Economy
GDP
- Arizona's GDP is $570.1 billion (2024) vs Montana's $78.4 billion.
- Arizona's economic output is 7.3 times (627%) larger than Montana's.
GDP per capita
- Arizona: $75,186 per person vs Montana: $68,975.
- Arizona's GDP per capita is 1.1 times (9%) higher than Montana's.
Average income
- Arizona: $65,798 vs Montana: $69,240 average income per person (per capita personal income).
- Montana's average income is 1.1 times (5%) higher than Arizona's.
Arizona vs Montana Counties
Number of counties
- Arizona has 15 counties, while Montana has 56.
- Montana's county count is 3.7 times (273%) higher than Arizona's.
Biggest county by area
- Arizona's largest county is Coconino County at 18,616 square miles; Montana's is Beaverhead County at 5,543 square miles.
- Coconino County's land area is 3.4 times (236%) larger than Beaverhead County's.
Smallest county by area
- Arizona: Santa Cruz County (1,236 sq mi) vs Montana: Silver Bow County (718 sq mi).
- Santa Cruz County's land area is 1.7 times (72%) larger than Silver Bow County's.
Most populous county
- Arizona: Maricopa County (4,673,096 people) vs Montana: Yellowstone County (171,583 people).
- Maricopa County's population is 27.2 times larger than Yellowstone County's.
Least populous county
- Arizona: Greenlee County (9,410 people) vs Montana: Petroleum County (525 people).
- Greenlee County's population is 17.9 times larger than Petroleum County's.
Richest county
- Arizona: Maricopa County ($72,176 per capita income) vs Montana: Gallatin County ($94,573).
- Gallatin County's income is 1.3 times (31%) richer than Maricopa County's.
Poorest county
- Arizona: Graham County ($44,164 per capita income) vs Montana: Blaine County ($37,554).
- Graham County's income is 1.2 times (18%) richer than Blaine County's.
Arizona vs Montana Taxes
State income tax
- Arizona has a top income tax rate of 2.5%, while Montana has a top income tax rate of 5.65%.
- Montana's top rate is 3.15 percentage points higher.
Property tax
- Arizona: 0.43% effective rate vs Montana: 0.69% of home value per year.
- Montana's rate is 0.26 percentage points higher.
Sales tax
- Arizona: 8.54% combined state and average local rate vs Montana: 0%.
- Arizona's combined rate is 8.54 percentage points higher.
Official Websites
Arizona official website · Montana official website
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More Size Comparisons
All Arizona size comparisons · All Montana 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.