The map above shows Massachusetts and Missouri side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Massachusetts vs Missouri Geography
Land area: Massachusetts has a land area of 7,801 square miles (20,204 km²), while Missouri has 68,746 square miles (178,052 km²). Missouri's land area is 8.8 times (781%) larger than Massachusetts'.
Total area: Massachusetts: 10,554 square miles (27,335 km²) vs Missouri: 69,707 square miles (180,540 km²), including inland and coastal water. Missouri's total area is 6.6 times (560%) larger than Massachusetts'.
Length: Massachusetts is 123 miles (198 km) long from north to south; Missouri is 328 miles (529 km). Missouri's north-south length is 2.7 times (167%) longer than Massachusetts'.
Width: Massachusetts spans 185 miles (297 km) east to west; Missouri spans 437 miles (703 km). Missouri's east-west width is 2.4 times (136%) wider than Massachusetts'.
Highest point: Massachusetts's highest point is Mount Greylock at 3,489 feet (1,063 m); Missouri's is Taum Sauk Mountain at 1,771 feet (540 m). Mount Greylock is 1,718 feet higher than Taum Sauk Mountain.
Lowest point: Massachusetts's lowest point is Atlantic Ocean at 0 feet; Missouri's is St. Francis River at 230 feet. Massachusetts's lowest point is 230 feet lower.
Massachusetts vs Missouri Population and History
Population: Massachusetts has a population of 7,136,171 (2024), while Missouri has 6,245,466 (2024). Massachusetts' population is 1.1 times (14%) larger than Missouri's.
Population density: Massachusetts: 914.8 people per square mile vs Missouri: 90.8. Massachusetts' population density is 10.1 times higher than Missouri's.
Biggest city: Massachusetts's biggest city is Boston with 673,458 people; Missouri's is Kansas City with 516,032. Boston's population is 1.3 times (31%) larger than Kansas City's.
Largest metro area: Massachusetts's largest metropolitan area is Boston-Cambridge-Newton, MA-NH metro area (5,025,517 people) vs Missouri's St. Louis, MO-IL metro area (2,811,927). Boston-Cambridge-Newton, MA-NH metro area's population is 1.8 times (79%) larger than St. Louis, MO-IL metro area's.
History: Massachusetts: Admitted to the Union on February 6, 1788, as the 6th state. Missouri: Admitted to the Union on August 10, 1821, as the 24th state. In its current form, Massachusetts is the older of the two by 33 years.
Massachusetts vs Missouri Economy
GDP: Massachusetts's GDP is $778.5 billion (2024) vs Missouri's $448.7 billion. Massachusetts' economic output is 1.7 times (74%) larger than Missouri's.
GDP per capita: Massachusetts: $109,095 per person vs Missouri: $71,846. Massachusetts' GDP per capita is 1.5 times (52%) higher than Missouri's.
Average income: Massachusetts: $93,607 vs Missouri: $64,920 average income per person (per capita personal income). Massachusetts' average income is 1.4 times (44%) higher than Missouri's.
Massachusetts vs Missouri Counties
Number of counties: Massachusetts has 14 counties, while Missouri has 115. Missouri's county count is 8.2 times (721%) higher than Massachusetts'.
Biggest county by area: Massachusetts's largest county is Worcester County at 1,511 square miles; Missouri's is Texas County at 1,177 square miles. Worcester County's land area is 1.3 times (28%) larger than Texas County's.
Smallest county by area: Massachusetts: Nantucket County (46 sq mi) vs Missouri: St. Louis city (62 sq mi). St. Louis city's land area is 1.3 times (34%) larger than Nantucket County's.
Most populous county: Massachusetts: Middlesex County (1,668,956 people) vs Missouri: St. Louis County (992,929 people). Middlesex County's population is 1.7 times (68%) larger than St. Louis County's.
Least populous county: Massachusetts: Nantucket County (14,670 people) vs Missouri: Worth County (1,872 people). Nantucket County's population is 7.8 times (684%) larger than Worth County's.
Richest county: Massachusetts: Nantucket County ($129,250 per capita income) vs Missouri: St. Louis County ($104,775). Nantucket County's income is 1.2 times (23%) richer than St. Louis County's.
Poorest county: Massachusetts: Hampshire County ($65,432 per capita income) vs Missouri: Douglas County ($40,515). Hampshire County's income is 1.6 times (62%) richer than Douglas County's.
Massachusetts vs Missouri Taxes
State income tax: Massachusetts has a top income tax rate of 9%, while Missouri has a top income tax rate of 4.7%. Massachusetts's top rate is 4.3 percentage points higher.
Property tax: Massachusetts: 1% effective rate vs Missouri: 0.79% of home value per year. Massachusetts's rate is 0.21 percentage points higher.
Sales tax: Massachusetts: 6.25% combined state and average local rate vs Missouri: 8.44%. Missouri's combined rate is 2.19 percentage points higher.
Official Websites
Massachusetts official website · Missouri official website
More Size Comparisons
All Massachusetts 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.