Boston radius map at a glance
A 10 mile circle centered on the Massachusetts State House is 20 miles across and covers about 314 sq mi (814 km²). It contains 41 towns, cities, and city districts with at least 15,000 residents; the largest apart from Boston itself is Cambridge, 2.4 mi to the NW. The nearest separately listed town is Charlestown, 1.3 mi away.
Boston is compact: a 10 mile circle from the State House reaches well beyond the city into Cambridge, Somerville, Quincy, and Newton. Boston Harbor and the Charles River fill much of the area near the center.
How far each radius reaches from central Boston
Each row counts the places with 15,000+ residents inside a circle of that size, and names the largest towns that first appear in that ring. Use it to choose a starting radius before you adjust the map.
| Radius | Area | Places inside | Largest new places in this ring |
|---|---|---|---|
| 5 mi (8.0 km) | 79 sq mi | 21 | Cambridge (2.4 mi NW), Dorchester (4.3 mi S), Somerville (2.7 mi NW) |
| 10 mi (16 km) | 314 sq mi | 41 | Quincy (8.0 mi SE), Lynn (9.5 mi NE), Newton (7.6 mi W) |
| 25 mi (40 km) | 1,963 sq mi | 83 | Lowell (23 mi NW), Brockton (19 mi S), Lawrence (25 mi N) |
| 50 mi (80 km) | 7,854 sq mi | 128 | Worcester (38 mi W), Providence (41 mi SW), Manchester (48 mi NW) |
Counts include city districts that GeoNames lists separately. Straight-line distances from 42.3588, -71.0638.
Towns and cities within 25 miles of Boston
The 15 largest of the 80 towns and cities with at least 15,000 residents within 25 miles of the Massachusetts State House. To list every place for your own center and radius, draw the circle above and open Towns and cities inside the circle.
| Place | Region | Distance | Population |
|---|---|---|---|
| Lowell | Massachusetts | 23 mi NW | 110,699 |
| Cambridge | Massachusetts | 2.4 mi NW | 110,402 |
| Dorchester | Massachusetts | 4.3 mi S | 97,826 |
| Brockton | Massachusetts | 19 mi S | 95,314 |
| Quincy | Massachusetts | 8.0 mi SE | 93,618 |
| Lynn | Massachusetts | 9.5 mi NE | 92,457 |
| Newton | Massachusetts | 7.6 mi W | 88,817 |
| Somerville | Massachusetts | 2.7 mi NW | 80,318 |
| Lawrence | Massachusetts | 25 mi N | 80,231 |
| Framingham | Massachusetts | 19 mi W | 68,318 |
| Framingham Center | Massachusetts | 20 mi W | 65,413 |
| Waltham | Massachusetts | 8.9 mi W | 63,378 |
| Malden | Massachusetts | 4.6 mi N | 61,068 |
| Brookline | Massachusetts | 3.5 mi SW | 58,732 |
| Medford | Massachusetts | 4.7 mi NW | 57,403 |
Population figures from GeoNames; census years and boundary definitions vary.
ZIP codes around Boston
How many US ZIP codes have their center point inside each radius from the Massachusetts State House, and the counties that hold most of them. The map lists every ZIP inside your own circle under ZIP codes inside the circle, ready to copy or download; see the ZIP code radius map guide for how ZIP edges are handled.
| Radius | ZIP codes | Counties | Most ZIP codes in |
|---|---|---|---|
| 5 mi | 59 | 3 | Suffolk County (42), Middlesex County (14), Norfolk County (3) |
| 10 mi | 118 | 4 | Suffolk County (53), Middlesex County (46), Norfolk County (12) |
| 25 mi | 262 | 7 | Middlesex County (94), Suffolk County (53), Norfolk County (41) |
Includes PO box and single-building ZIP codes. ZIP data from GeoNames (CC BY 4.0).
Distances to nearby major cities
The closest cities with more than 500,000 residents, measured in a straight line from the Massachusetts State House. Road distances are longer.
| City | Direction | Miles | Kilometers |
|---|---|---|---|
| The Bronx | SW | 178 mi | 287 km |
| Queens | SW | 184 mi | 297 km |
| Manhattan | SW | 185 mi | 298 km |
| New York City | SW | 190 mi | 306 km |
| Brooklyn | SW | 190 mi | 306 km |
| Montréal, Canada | NW | 251 mi | 404 km |
A comparison to try
Compare a Back Bay office with lab space in Cambridge and the Seaport using circles of equal size.
- Choose one of the place shortcuts above, then select a search result to move your circle.
- Set a distance in miles, or switch units without changing the circle’s size.
- Choose Add circle, then search the next location to move the new circle there.
- Give the circles different labels and colors, then choose Fit all circles to see their overlap.
Choose the right center
The map starts at the Massachusetts State House (42.3588, -71.0638). Many neighboring municipalities fall inside small circles, so check which town an address belongs to before using a radius for permits, schools, or services.
The place shortcuts run a search; they are not neighborhood outlines or claims that a whole neighborhood is inside your circle.
Keep your Boston map
Your draft saves in this browser. Share creates a snapshot link. Export a map project to reopen your circles on another device, KML for Google Earth, GeoJSON for GIS software, CSV for a spreadsheet, or a PNG image for a report.
Frequently asked questions
How big is a 10 mile radius around Boston?
A 10 mile radius is 20 miles across and covers about 314 sq mi (814 km²), including any water inside the circle. Measured from the Massachusetts State House, it contains 41 listed towns, cities, and city districts with at least 15,000 residents.
How many towns and cities are within 25 miles of Boston?
80 towns and cities with at least 15,000 residents lie within 25 straight-line miles of the Massachusetts State House. The largest are Lowell, Cambridge, Dorchester. City districts listed separately in the data are not counted here.
What is the nearest large city to Boston?
The Bronx is the nearest city with more than 500,000 residents (outside Boston itself), about 178 mi (287 km) to the SW in a straight line.
How many ZIP codes are within 10 miles of Boston?
118 ZIP codes have their center point within 10 miles of the Massachusetts State House, in 4 counties. Scroll to ZIP codes inside the circle under the map to list, copy, or download them for any center and radius.
Does a radius around Boston follow roads?
No. The circle shows straight-line distance from the center in every direction. Many neighboring municipalities fall inside small circles, so check which town an address belongs to before using a radius for permits, schools, or services.
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