How Big Is Massachusetts?
Massachusetts is the 45th largest state in the United States, covering approximately 20,306 square kilometers (7,840 square miles). It is home to approximately 7.2 million people. That's about 67% the size of Belgium.
Massachusetts
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Massachusetts on the Map
Massachusetts's Geography
Within the United States, Massachusetts is the 45th largest state. Its capital is Boston. It has a population density of about 352 people per km².
How Long and Wide Is Massachusetts?
Massachusetts spans about 294 km (183 mi) from east to west — roughly the distance from Los Angeles to Las Vegas, and 155 km (96 mi) from north to south — roughly the length of Long Island. At highway speeds, driving 183 miles takes roughly 3 hours.
How Many Times Does Massachusetts Fit?
Similar in Size
How Big Is Massachusetts Compared to Well-Known Places?
| Place | Area | vs Massachusetts |
|---|---|---|
| Rhode Island | 2,706 km² (1,045 sq mi) | 8× smaller |
| Massachusetts | 20,306 km² (7,840 sq mi) | — |
| Belgium | 30,528 km² (11,787 sq mi) | 50% larger |
| Switzerland | 41,277 km² (15,937 sq mi) | 2× larger |
| Netherlands | 41,543 km² (16,040 sq mi) | 2× larger |
| South Korea | 99,720 km² (38,502 sq mi) | 4.9× larger |
Places in Massachusetts
Length and width are measured from the outline on the map. Sources: US Census Bureau (2025). How we calculate this
Explore Massachusetts
Massachusetts at a Glance
| Statistic | Value |
|---|---|
| Total Area | 20,306 km² (7,840 sq mi) |
| US Size Rank | #45 of 51 |
| Capital | Boston |
| Population | 7,154,084 |
| Population Density | 352 per km² |