The map above shows Massachusetts and Montana side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Massachusetts vs Montana Geography
Land area: Massachusetts has a land area of 7,801 square miles (20,204 km²), while Montana has 145,550 square miles (376,973 km²). Montana's land area is 18.7 times larger than Massachusetts'.
Total area: Massachusetts: 10,554 square miles (27,335 km²) vs Montana: 147,043 square miles (380,840 km²), including inland and coastal water. Montana's total area is 13.9 times larger than Massachusetts'.
Length: Massachusetts is 123 miles (198 km) long from north to south; Montana is 319 miles (514 km). Montana's north-south length is 2.6 times (159%) longer than Massachusetts'.
Width: Massachusetts spans 185 miles (297 km) east to west; Montana spans 607 miles (976 km). Montana's east-west width is 3.3 times (228%) wider than Massachusetts'.
Highest point: Massachusetts's highest point is Mount Greylock at 3,489 feet (1,063 m); Montana's is Granite Peak at 12,767 feet (3,891 m). Granite Peak is 9,278 feet higher than Mount Greylock.
Lowest point: Massachusetts's lowest point is Atlantic Ocean at 0 feet; Montana's is Kootenai River at 1,805 feet. Massachusetts's lowest point is 1,805 feet lower.
Massachusetts vs Montana Population and History
Population: Massachusetts has a population of 7,136,171 (2024), while Montana has 1,137,233 (2024). Massachusetts' population is 6.3 times (528%) larger than Montana's.
Population density: Massachusetts: 914.8 people per square mile vs Montana: 7.8. Massachusetts' population density is 117.3 times higher than Montana's.
Biggest city: Massachusetts's biggest city is Boston with 673,458 people; Montana's is Billings with 121,483. Boston's population is 5.5 times (454%) larger than Billings'.
Largest metro area: Massachusetts's largest metropolitan area is Boston-Cambridge-Newton, MA-NH metro area (5,025,517 people) vs Montana's Billings, MT metro area (192,531). Boston-Cambridge-Newton, MA-NH metro area's population is 26.1 times larger than Billings, MT metro area's.
History: Massachusetts: Admitted to the Union on February 6, 1788, as the 6th state. Montana: Admitted to the Union on November 8, 1889, as the 41st state. In its current form, Massachusetts is the older of the two by 101 years.
Massachusetts vs Montana Economy
GDP: Massachusetts's GDP is $778.5 billion (2024) vs Montana's $78.4 billion. Massachusetts' economic output is 9.9 times (893%) larger than Montana's.
GDP per capita: Massachusetts: $109,095 per person vs Montana: $68,975. Massachusetts' GDP per capita is 1.6 times (58%) higher than Montana's.
Average income: Massachusetts: $93,607 vs Montana: $69,240 average income per person (per capita personal income). Massachusetts' average income is 1.4 times (35%) higher than Montana's.
Massachusetts vs Montana Counties
Number of counties: Massachusetts has 14 counties, while Montana has 56. Montana's county count is 4.0 times (300%) higher than Massachusetts'.
Biggest county by area: Massachusetts's largest county is Worcester County at 1,511 square miles; Montana's is Beaverhead County at 5,543 square miles. Beaverhead County's land area is 3.7 times (267%) larger than Worcester County's.
Smallest county by area: Massachusetts: Nantucket County (46 sq mi) vs Montana: Silver Bow County (718 sq mi). Silver Bow County's land area is 15.5 times larger than Nantucket County's.
Most populous county: Massachusetts: Middlesex County (1,668,956 people) vs Montana: Yellowstone County (171,583 people). Middlesex County's population is 9.7 times (873%) larger than Yellowstone County's.
Least populous county: Massachusetts: Nantucket County (14,670 people) vs Montana: Petroleum County (525 people). Nantucket County's population is 27.9 times larger than Petroleum County's.
Richest county: Massachusetts: Nantucket County ($129,250 per capita income) vs Montana: Gallatin County ($94,573). Nantucket County's income is 1.4 times (37%) richer than Gallatin County's.
Poorest county: Massachusetts: Hampshire County ($65,432 per capita income) vs Montana: Blaine County ($37,554). Hampshire County's income is 1.7 times (74%) richer than Blaine County's.
Massachusetts vs Montana Taxes
State income tax: Massachusetts has a top income tax rate of 9%, while Montana has a top income tax rate of 5.65%. Massachusetts's top rate is 3.35 percentage points higher.
Property tax: Massachusetts: 1% effective rate vs Montana: 0.69% of home value per year. Massachusetts's rate is 0.31 percentage points higher.
Sales tax: Massachusetts: 6.25% combined state and average local rate vs Montana: 0%. Massachusetts's combined rate is 6.25 percentage points higher.
Official Websites
Massachusetts official website · Montana official website
More Size Comparisons
All Massachusetts 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.