Description: Detailed large map of Massachusetts State, USA showing cities, towns, county formations, roads highway, US highways and State routes.
Map of Massachusetts (USA). Massachusetts map with cities, counties, and towns. Use this detailed map to understand Massachusetts's full county grid, every administrative capital (county seat), the major cities and towns, bordering states and waters, and a few highway cues for orientation only. It is the best map style for residents, travelers, and geography students who want clarity without road clutter. Massachusetts packs a lot into a small footprint, just 14 counties across roughly 10,554 square miles of land and water, and several of those counties stopped running their own governments decades ago. That's exactly why this map leans on color and bold county-seat labels instead of a dense web of route numbers, the shading tells you where you are, and the thin road lines underneath stay in the background. The cartography also marks the state's big metro anchors clearly: Boston in Suffolk County, Worcester in Worcester County, Springfield in Hampden County, and Cambridge and Lowell, both historic shire towns of Middlesex County.
Borders and waters at a glance: Massachusetts borders New York on the west, Vermont and New Hampshire to the north, Connecticut and Rhode Island to the south, and the Atlantic Ocean to the east. All 14 counties are shown on the map, with the Connecticut, Merrimack, and Charles rivers acting as the main orientation lines, alongside Massachusetts Bay, Cape Cod Bay, and Buzzards Bay along the coast.
Road-light orientation: Light corridor cues for I-90, I-91, I-93, I-95, I-195, US-6, and Route 2 are all this map uses to help you get your bearings, they're there to place a county or a city, not to plan a drive.
The map reads west to east, starting in the Berkshire hills and finishing out at Nantucket. Each county below is called out with its seat and a few nearby cities and roads to help you place it quickly.
Start at the far west, where Berkshire County fills the map with mountain country along the Taconic and Hoosac ranges. Pittsfield is the county seat and regional hub, with North Adams tucked near the Vermont line and Adams and Williamstown sitting in the Hoosac valley just south of it. Resort towns like Lenox, Lee, Stockbridge, and Great Barrington line the Housatonic River as it runs south. A light Route 2 ribbon, the old Mohawk Trail, runs east from Williamstown, and a soft I-90 Mass Pike line cuts through the southern valley near Lee and Stockbridge.
North of the Quabbin highlands sits Franklin County, seat Greenfield, where I-91 crosses Route 2. Deerfield, Montague, Turners Falls, Shelburne Falls, and Orange appear as small anchors along the Deerfield River and the upper Connecticut River. This is the only Massachusetts county that touches both Vermont and New Hampshire, which makes it a useful bearing point on the northern edge of the map.
Moving south, Hampshire County shows Northampton as its seat, with the Five Colleges cluster labeled by Amherst and South Hadley nearby. Easthampton, Hadley, and Belchertown sit around the Connecticut River and the western edge of the Quabbin Reservoir. A thin I-91 line threads Northampton down to Holyoke and Springfield.
At the state's southwestern elbow is Hampden County, seat Springfield, printed in bold on the river. Chicopee, Holyoke, Westfield, Agawam, Ludlow, West Springfield, Longmeadow, East Longmeadow, and Palmer all appear around it. I-90 runs east-west just north of downtown Springfield and I-91 runs north-south through it, with both lines kept faint enough that Springfield's role as the Connecticut Valley crossroads still comes through clearly.
Worcester County is the largest county on the map by land area, and Worcester itself is shown as both seat and metro core. Around it are Shrewsbury, Auburn, Millbury, Oxford, Webster, Southbridge, Sturbridge, Leicester, Holden, Fitchburg, Leominster, Gardner, Clinton, Grafton, Northbridge, Uxbridge, Milford, and Westborough. Route 2 crosses the north near Fitchburg and Gardner, a light I-190 spur rises toward Fitchburg, and I-290 curls directly through Worcester. This county also reaches south to touch both Connecticut and Rhode Island, and its ponds and reservoirs, including the Wachusett Reservoir near Clinton, dot the uplands without crowding the county names.
The big block northwest of Boston is Middlesex County, Massachusetts's most populous, with two historic shire towns, Cambridge and Lowell, both labeled. It's a long list of cities and towns that define MetroWest and the northern arc of Boston: Somerville, Medford, Malden, Everett, Arlington, Belmont, Watertown, Waltham, and Newton along the Charles River valley, plus Framingham, Natick, Marlborough, Acton, Concord, Maynard, Sudbury, Wayland, Weston, Woburn, Burlington, Wilmington, Billerica, Chelmsford, Tewksbury, and Ayer farther out. Also shown is Lexington, where the Revolutionary War's first shots were fired in 1775. A soft I-95 Route 128 ring and thin US-3 and I-93 chords mark the corridors north toward New Hampshire, while the county shading itself does most of the work.
Essex County covers the North Shore, with Salem as the county seat and Lawrence marked as a major registry and mill city. The shoreline reads in sequence: Lynn, Swampscott, Marblehead, Salem, Beverly, Manchester-by-the-Sea, Gloucester, Rockport, Ipswich, Rowley, Newbury, Newburyport, and Amesbury. Inland you'll find Peabody, Danvers, Middleton, Boxford, Andover, North Andover, Methuen, and Haverhill along the Merrimack River. A fine I-95 arc and Route 128 loop frame the coast without overpowering the county colors.
Suffolk County is small, dense, and urban, with Boston serving as both the county seat and the state capital. Chelsea, Revere, and Winthrop round out the county along the harbor rim. Shoreline detail around Boston Harbor and Massachusetts Bay carries the orientation work, so the roads inside Suffolk stay especially light, letting Boston's position among its neighboring counties stand out rather than any particular exit number.
Southwest of Boston is Norfolk County, seat Dedham. Quincy, Milton, Brookline, Needham, Norwood, Canton, Randolph, Walpole, Westwood, Wellesley, Foxborough, Sharon, Holbrook, and coastal Cohasset all appear on the map. A faint I-93 and I-95 ring, plus the mouth of the Neponset River, help place Quincy and Milton on the harbor's south side while the county name stays easy to read. Norfolk is also one of the counties that reaches down to touch Rhode Island.
The South Shore and cranberry belt make up Plymouth County, shown with dual seats at Plymouth and Brockton. A string of coastal towns runs Hull, Hingham, Scituate, Marshfield, Duxbury, Kingston, Plympton, Pembroke, Hanover, Hanson, Whitman, and Abington, while inland the map marks Bridgewater (with East and West Bridgewater), Middleborough, Lakeville, Carver, Rochester, and Wareham near the canal approaches. Route 3 and US-44 appear softly to show the Boston-to-Cape connection without drowning out the county fill.
On the South Coast, Bristol County places Taunton as its seat and shows the port cities of New Bedford and Fall River as its two regional anchors. Attleboro, North Attleborough, Seekonk, Swansea, Somerset, Dartmouth, Fairhaven, Acushnet, and Freetown are also labeled. A light I-195 line ties Fall River to New Bedford and on toward the Cape, while Route 24 hints at the route north to I-93. Bristol is also the southernmost of the three counties that reach the Rhode Island border.
Barnstable County covers all of Cape Cod, from Bourne at the canal to Provincetown at the very tip. Villages and towns line the bay and ocean sides: Bourne, Sandwich, Mashpee, Falmouth, Barnstable (with Hyannis inside it), Yarmouth, Dennis, Harwich, Chatham, Orleans, Eastham, Wellfleet, Truro, and Provincetown. US-6 is the light backbone running the length of the dunes, and the Cape Cod Canal with its Sagamore and Bourne bridges is noted where the shoreline cuts through.
South of the Cape, the map shades Dukes County, which covers the Martha's Vineyard group of islands. Edgartown is the seat, and Oak Bluffs, Vineyard Haven (in the town of Tisbury), West Tisbury, Chilmark, and Aquinnah are all shown, with harbor shapes hinting at the ferry landings. Vineyard Sound separates the island from the mainland, and Muskeget Channel separates it from Nantucket to the east.
Farthest out to sea is Nantucket County, which is coextensive with the single Town of Nantucket. It's the smallest Massachusetts county by land and the least populous by a wide margin, even though the county government here was abolished in 1996 and the town now runs both town and county functions directly; the county still exists as a geographic and judicial district on the map. The map shows Nantucket town and Siasconset, with Great Point and the island's shoals giving quick orientation. Nantucket Sound lies to the north and open Atlantic wraps the other three sides, and roads stay minimal here by design.
Three rivers do most of the orientation work on this map. The Connecticut River anchors the Pioneer Valley, running past Greenfield, Northampton, Holyoke, and Springfield. The Merrimack River crosses the north, past Lowell, Lawrence, and Haverhill on its way to the Atlantic at Newburyport. The Charles River loops through Middlesex and Suffolk, past Waltham, Newton, and Cambridge, before opening into Boston Harbor. Keep these three in mind and most of the state's cities fall into place.
The road layer stays intentionally minimal. I-90, the Mass Pike, runs the width of the state from the New York line to Boston. I-91 runs north-south through the Pioneer Valley. I-93 connects Boston to southern New Hampshire. I-95 forms the outer ring around Boston, locally Route 128, before continuing toward Rhode Island and New Hampshire. I-195 links New Bedford, Fall River, and the approach to Cape Cod, and US-6 carries that last stretch out to Provincetown. None of these lines are meant for turn-by-turn navigation, only for placing counties relative to one another.
Every one of Massachusetts's 14 counties and its seat, in alphabetical order: Barnstable County (Barnstable), Berkshire County (Pittsfield), Bristol County (Taunton), Dukes County (Edgartown), Essex County (Salem), Franklin County (Greenfield), Hampden County (Springfield), Hampshire County (Northampton), Middlesex County (Cambridge and Lowell), Nantucket County (Nantucket), Norfolk County (Dedham), Plymouth County (Plymouth and Brockton), Suffolk County (Boston), and Worcester County (Worcester).
Use this as a quick index. Every line lists the county with its county seat (or seats), plus a short cue on rivers, borders, or corridors.
Berkshire – Pittsfield; Taconic and Hoosac ranges, Housatonic River valley, borders New York and Vermont.
Franklin – Greenfield; I-91 meets Route 2, the only county touching both Vermont and New Hampshire.
Hampshire – Northampton; Five Colleges area, Connecticut River and the Quabbin's west edge.
Hampden – Springfield; Mass Pike and I-91 junction, borders Connecticut.
Worcester – Worcester; the state's largest county by area, I-290 and I-190, borders both Connecticut and Rhode Island.
Middlesex – Cambridge and Lowell; the state's most populous county, Route 128 ring, Charles River valley.
Essex – Salem, with Lawrence as a registry city; North Shore coastline, Merrimack River, borders New Hampshire.
Suffolk – Boston; the state capital, on Boston Harbor.
Norfolk – Dedham; south of Boston, reaches down to the Rhode Island line.
Plymouth – Plymouth and Brockton; cranberry country, Cape Cod Canal approach.
Bristol – Taunton; New Bedford and Fall River, I-195 corridor, borders Rhode Island.
Barnstable – Barnstable; all of Cape Cod, US-6 spine, meets Rhode Island Sound offshore.
Dukes – Edgartown; the Martha's Vineyard island group.
Nantucket – Nantucket; the smallest and least populous county, an island about 30 miles offshore.
This county-first, road-light layout keeps county names and seats readable in every region while still leaving enough corridor hints to answer practical navigation questions.
Massachusetts borders New York across the Taconic Range to the west, Vermont and New Hampshire to the north, Connecticut and Rhode Island to the south, and the Atlantic Ocean to the east. The state holds 14 counties, though eight of the county governments themselves were abolished between 1997 and 2000; the counties still exist as geographic and judicial districts even in places like Nantucket and Suffolk, where the elected county layer of government no longer does. Worcester County is the largest by land area at about 1,513 square miles, while Nantucket County is the smallest at about 48 square miles, and also the least populous with roughly 14,483 residents. Middlesex County, home to Cambridge and Lowell, is the most populous at roughly 1.67 million residents. Essex, Middlesex, and Suffolk counties share the title of oldest county, all three created on the same day in 1643 when the Massachusetts Bay Colony was first divided into shires. Massachusetts covers about 10,554 square miles in total, with roughly 7,801 square miles of land and 2,753 square miles of water. The capital, Boston, sits in Suffolk County on Massachusetts Bay, and the state's major metros run from Boston and Worcester through Springfield in the west to New Bedford and Fall River on the South Coast. Landscape-wise, the state moves from the Berkshire Highlands in the west, down through the Connecticut River Valley, across the Worcester Hills and central uplands, and out to the Boston Basin, the South Shore, and the sandy arm of Cape Cod and the Islands.
Massachusetts's ten largest cities by current population are Boston (about 673,000, Suffolk County), Worcester (about 207,055, Worcester County), Springfield (about 154,749, Hampden County), Cambridge (about 118,796, Middlesex County), Lowell (about 118,368, Middlesex County), Brockton (about 105,643, Plymouth County), Quincy (about 101,636, Norfolk County), Lynn (about 101,253, Essex County), New Bedford (about 101,079, Bristol County), and Fall River (about 94,000, Bristol County). Boston anchors biotech, higher education, and finance, home to a dense cluster of hospitals and research institutions in the Longwood Medical Area and a banking and insurance sector that goes back generations. Cambridge, just across the Charles, holds Harvard and MIT and a biotech corridor along Kendall Square that draws talent and venture capital from around the world. Worcester has rebuilt itself around its own hospitals, colleges, and a growing biotech footprint. Springfield anchors the Pioneer Valley's manufacturing and healthcare base, and Fall River and New Bedford, once whaling and textile capitals, now run some of the busiest fishing ports on the East Coast, with New Bedford regularly ranking among the top-value fishing ports in the country. Cape Cod and the Islands lean on tourism and fishing, with a summer population that swells far past the year-round count in Barnstable, Dukes, and Nantucket counties.
Massachusetts carries an outsized share of early American history. Boston's Freedom Trail in Suffolk County links Revolutionary War sites, and nearby Middlesex County holds Lexington and Concord, where the war's first shots were fired in 1775. Plymouth, in Plymouth County, marks the 1620 landing of the Mayflower and is often called America's hometown. The state's higher education cluster runs deep: Harvard and MIT in Middlesex County's Cambridge, plus Boston University, Boston College, and a long list of others packed into the Boston area, alongside Amherst College and the University of Massachusetts in Hampshire County's Pioneer Valley. Cape Cod, Martha's Vineyard, and Nantucket carry their own maritime heritage, from whaling-era captains' houses to weathered fishing fleets still working out of Provincetown and Nantucket harbor. In the west, the Berkshires host Tanglewood, the summer home of the Boston Symphony Orchestra, and a cluster of art museums in Berkshire County that draw visitors well beyond New England.
On this map, Mount Greylock (Berkshire Highlands, Berkshire County) and the Connecticut, Merrimack, and Charles rivers double as landmarks for finding counties quickly. For elevation, terrain, watersheds, and land-cover detail, see our Physical Map of Massachusetts.
Massachusetts has a humid continental climate in the interior and west, with cold, snowy winters and warm summers, moderating to milder, foggier conditions along the coast and on Cape Cod and the Islands. For a full seasonal and biome breakdown, see our Physical Map of Massachusetts.
North-south travel runs mainly on I-91 through the Pioneer Valley and I-93 between Boston and southern New Hampshire, with I-95 forming the outer ring around Boston (Route 128) before angling toward Rhode Island and New Hampshire. East-west travel runs on I-90, the Mass Pike, from the New York line through Springfield and Worcester to Boston, with I-195 and US-6 carrying the last stretch to the South Coast and out along Cape Cod. Keep in mind that ZIP codes do not follow county lines in Massachusetts, so a single ZIP code can span two counties. Always confirm the county name directly from the map or index rather than assuming it from a ZIP prefix.
Massachusetts has 14 counties and the map shows every one with a colored block and its county seat or historic shire town labeled.
County boundaries, county seats, coastline and neighboring states, with only light interstate and route cues for orientation.
Boston, the state capital and largest city, sits in Suffolk County on Massachusetts Bay.
Worcester County, the state's largest county by land area.
Hampden County, on the Connecticut River in the Pioneer Valley.
Middlesex County. Cambridge and Lowell are its two historic shire towns and registry seats.
Franklin, Worcester, Middlesex, and Essex counties, from west to east along the northern line.
Berkshire and Franklin counties along the northwestern edge.
Berkshire County, along the Taconic Range in the far west.
Berkshire, Hampden, and Worcester counties along the southern line.
Worcester, Norfolk, and Bristol counties by land, with Plymouth and Barnstable meeting Rhode Island waters offshore.
Light lines for I-90, I-91, I-93, I-95, I-195, US-6, and Route 2 mark the major corridors.
Barnstable County, from Bourne at the canal to Provincetown at the tip.
Martha's Vineyard is Dukes County; Nantucket is its own county, Nantucket, east of the Cape across Nantucket Sound.
Salem is the county seat of Essex County on the North Shore.
Bristol County, on the South Coast.
Plymouth County, which uses both as its dual county seats.
Norfolk County, seat Dedham.
Pittsfield is the county seat of Berkshire County in the far west.
Hampshire County, in the Pioneer Valley.
Between Bourne and Sandwich, at the start of Cape Cod in Barnstable County.
US-6 is the light backbone across the Cape.
Berkshire County, near Adams and North Adams.
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Worcester County, at about 1,513 square miles.
Nantucket County, at about 48 square miles of land.
Middlesex County, home to Cambridge and Lowell, with roughly 1.67 million residents.
Nantucket County, with roughly 14,483 residents.
Boston, in Suffolk County, with roughly 673,000 residents.
Essex, Middlesex, and Suffolk counties, all created on the same day in 1643 as three of the original Massachusetts Bay Colony shires.
No. ZIP codes cross county lines, so use the county boundaries and seats shown here instead.
At the outer tip of Cape Cod in Barnstable County.
Franklin, Hampshire, and Hampden counties.
East of the Cape across Nantucket Sound, in its own county, Nantucket.
Identify the county seat first, then read outward to rivers, bays, and the light highway cues for regional context.
Physical Map of Massachusetts
Physical map and map image of Massachusetts.
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