CountyAtlas

Massachusetts County Map with Cities — All 14 Counties

All 14 of Massachusetts's counties, mapped from official U.S. Census boundaries with population, income, and unemployment for every one. Color the map by any measure, tap a county for its data, or download a print-ready copy.

Massachusetts CountiesFIPS 25
Barnstable CountyBerkshire CountyBristol CountyDukes CountyEssex CountyFranklin CountyHampden CountyHampshire CountyMiddlesex CountyNantucket CountyNorfolk CountyPlymouth CountySuffolk CountyWorcester CountyBostonWorcesterSpringfieldLowellBrocktonLynnNew BedfordFall RiverNewtonLawrenceTaunton Berkshire  Franklin  Dukes  Boston  Worcester  Springfield  Lowell  Brockton  Lynn  New Bedford  Fall River  Newton  Lawrence  Taunton BostonWorcesterSpringfieldCambridgeLowellBrocktonLynnNew BedfordFall RiverNewtonLawrenceHaverhillTaunton Berkshire  Franklin  Dukes  Nantucket  Boston  Worcester  Springfield  Cambridge  Lowell  Brockton  Lynn  New Bedford  Fall River  Newton  Lawrence  Haverhill  Taunton BostonWorcesterSpringfieldCambridgeLowellBrocktonQuincyNew BedfordFall RiverLawrenceHaverhillWalthamTaunton Plymouth  Berkshire  Franklin  Hampshire  Dukes  Nantucket  Boston  Worcester  Springfield  Cambridge  Lowell  Brockton  Quincy  New Bedford  Fall River  Lawrence  Haverhill  Waltham  Taunton BostonWorcesterSpringfieldCambridgeLowellBrocktonQuincyLynnNew BedfordFall RiverNewtonLawrenceFraminghamHaverhillTaunton Barnstable  Plymouth  Berkshire  Franklin  Hampshire  Dukes  Norfolk  Nantucket  Boston  Worcester  Springfield  Cambridge  Lowell  Brockton  Quincy  Lynn  New Bedford  Fall River  Newton  Lawrence  Framingham  Haverhill  Taunton 
Albers Equal Area ConicDatum WGS 84Census PEP V2025 · Census SAIPE 2024 · BLS LAUS September 2026, preliminary · Census TIGER 2026
CountyAtlasEdition
Massachusetts’s 14 counties, projected equal-area. Hover over a county, or tap it, for its seat and key numbers; select it for all its data.
Color counties by

Tap any county for its population, income, and more.

Massachusetts at a glance

Massachusetts’s 14 counties, by the numbers

The table lists every county’s population, median household income, unemployment, density, and land area. Sort it by any column to find yours or rank them. A few patterns stand out:

  • Concentrated. Half of Massachusetts’s 7,154,084 residents live in just 4 of 14 counties, and the 5 largest hold 68.7% of the total. calculated from Census PEP V2025
  • Income tracks poverty. The gap from richest to poorest runs 1.9×, and the 7 highest-income counties average 7.9% in poverty against 12.0% for the 7 lowest. calculated from Census SAIPE 2024
  • The median county. Half of Massachusetts’s counties have fewer than 505,584 residents, and half report a median household income below $95,590. calculated from Census PEP V2025 · Census SAIPE 2024
  • Lopsided density. Only 5 of 14 counties are denser than Massachusetts’s statewide average of 917 people per square mile. calculated from Census PEP V2025 · Census TIGER 2026
Barnstable County233,539$88,4953.8%592/sq mi394 sq miBarnstable Town
Berkshire County128,224$76,1773.9%138/sq mi927 sq miPittsfield
Bristol County593,640$81,8984.5%1,073/sq mi553 sq miTaunton
Dukes County21,219$112,7333.3%206/sq mi103 sq miEdgartown
Essex County826,653$102,0444.3%1,678/sq mi493 sq miSalem
Franklin County70,698$74,5943.8%101/sq mi699 sq miGreenfield
Hampden County464,338$71,2875.3%753/sq mi617 sq miSpringfield
Hampshire County164,065$82,8173.8%311/sq mi527 sq miNorthampton
Middlesex County1,669,979$132,5993.8%2,042/sq mi818 sq miCambridge; Lowell
Nantucket County14,758$117,8773.0%320/sq mi46 sq miNantucket
Norfolk County739,749$137,5333.9%1,868/sq mi396 sq miDedham
Plymouth County546,829$111,9104.2%830/sq mi659 sq miPlymouth
Suffolk County791,891$95,1744.2%13,592/sq mi58 sq miBoston
Worcester County888,502$96,0054.2%588/sq mi1,511 sq miWorcester

Click a column heading to sort all 14 counties. A suppressed estimate (coefficient of variation ≥ 0.30) shows a marker, never a guess. County seats are from Wikidata (CC0), each validated to a Census place inside its county. Where Wikidata has none, the seat comes from the page cited for that county in the seat file, and where the table names no seat, it says why. See the methodology.

Download & print this Massachusetts map

Map of Massachusetts's 14 counties on official U.S. Census boundaries, with major cities: Boston, Worcester, Springfield, Cambridge, Lowell, Brockton

Free, print-ready maps of all 14 Massachusetts counties on official U.S. Census boundaries, with no watermark. They are public domain (CC0).

  • Full map (counties and major cities): PNG · PDF
  • Blank outline to print and label yourself: PNG · PDF
  • Counties only, labeled, for reference: PNG · PDF

Massachusetts maps, colored by the data

Map of Massachusetts counties shaded by population, from official U.S. Census data
Population Map by County · Census PEP V2025
Map of Massachusetts counties shaded by median household income, from official U.S. Census data
Median Household Income Map by County · Census SAIPE 2024
Map of Massachusetts counties shaded by unemployment rate, from U.S. Bureau of Labor Statistics data
Unemployment Rate Map by County · BLS LAUS September 2026, preliminary

Cities in Massachusetts

Massachusetts has 58 incorporated cities. The largest is Boston in Suffolk County with 666,442 residents. Use the search on the map above to find any city and highlight the county it sits in.

BostonSuffolk County666,442
WorcesterWorcester County207,055
SpringfieldHampden County154,749
CambridgeMiddlesex County118,796
LowellMiddlesex County118,368
BrocktonPlymouth County105,386
QuincyNorfolk County102,114
LynnEssex County101,709
New BedfordBristol County100,998
Fall RiverBristol County94,082
NewtonMiddlesex County89,044
LawrenceEssex County88,736
SomervilleMiddlesex County81,036
FraminghamMiddlesex County72,399
HaverhillEssex County67,698
MaldenMiddlesex County65,906
WalthamMiddlesex County64,902
TauntonBristol County60,433
RevereSuffolk County60,012
MedfordMiddlesex County59,354
Weymouth TownNorfolk County58,505
ChicopeeHampden County55,295
PeabodyEssex County54,695
MethuenEssex County53,475
EverettMiddlesex County50,045
Barnstable TownBarnstable County49,568
AttleboroBristol County46,762
SalemEssex County44,795
LeominsterWorcester County43,909
PittsfieldBerkshire County43,457
BeverlyEssex County42,665
WoburnMiddlesex County41,939
FitchburgWorcester County41,798
MarlboroughMiddlesex County41,647
WestfieldHampden County40,378
ChelseaSuffolk County39,908
Braintree TownNorfolk County38,899
Amherst TownHampshire County38,182
HolyokeHampden County37,813
WatertownMiddlesex County35,543
Randolph TownNorfolk County34,878
Franklin TownNorfolk County33,154
North Attleborough TownBristol County30,984
NorthamptonHampshire County30,962
GloucesterEssex County30,075
MelroseMiddlesex County29,650
West Springfield TownHampden County28,772
Agawam TownHampden County28,539
Bridgewater TownPlymouth County28,471
GardnerWorcester County21,148

The table shows the 50 most populous. Search the map above for the other 8.

A city can reach into more than one county. The table names the one its center falls in; “+N more” counts the others, from the Census Bureau’s count of each city by county part Census ACS 2020–2024 place parts.

Which Massachusetts county is the richest, largest, most crowded? The answers

  • Massachusetts’s highest median household income is in Norfolk County ($137,533); the lowest is in Hampden County ($71,287). Census SAIPE 2024
  • Massachusetts’s most populous county is Middlesex County (1,669,979); the least populous is Nantucket County (14,758), a 113× spread. calculated from Census PEP V2025
  • Massachusetts’s largest county by land area is Worcester County (1,511 sq mi); the smallest is Nantucket County (46 sq mi). Census TIGER 2026
  • Massachusetts’s highest population density is in Suffolk County (13,592/sq mi); the lowest is in Franklin County (101/sq mi). calculated from Census PEP V2025 · Census TIGER 2026
  • Massachusetts’s highest poverty rate is in Hampden County (16.0%); the lowest is in Norfolk County (6.4%). Census SAIPE 2024
  • In Massachusetts, unemployment is highest in Hampden County (5.3%) and lowest in Nantucket County (3.0%), for September 2026 (preliminary). BLS LAUS September 2026, preliminary
  • Massachusetts’s highest median age is in Barnstable County (55.4); the lowest is in Suffolk County (33.9). Census ACS 2020–2024
  • Massachusetts’s highest share of adults 25 and over with a bachelor’s degree or higher is in Middlesex County (59.5%); the lowest is in Hampden County (29.3%). Census ACS 2020–2024

Every figure is a current official estimate from the source named, never a crowd-sourced or copied value. Suppressed estimates (coefficient of variation ≥ 0.30) are omitted, never guessed. See the full methodology.

Massachusetts counties: common questions

How many counties are in Massachusetts?

Massachusetts has 14 counties covering 7,801 sq mi and about 7.2M residents. Every one is on the map and in the table above.

What is the largest county in Massachusetts?

It depends on the measure. By land area it’s Worcester County (1,511 sq mi); by population it’s Middlesex County (1,669,979 residents).

What county is Boston in?

Boston, population 666,442, is in Suffolk County. Use the search on the map to find any Massachusetts city’s county.

What is the richest county in Massachusetts?

By median household income, Norfolk County is the richest at $137,533; the poorest is Hampden County at $71,287. Census SAIPE 2024

What is the most populous county in Massachusetts?

Middlesex County, with 1,669,979 residents, about 23.3% of Massachusetts’s people. That is 113× the least populous, Nantucket County (14,758).

Sources & vintages

Data current through .

By , BSc Physics, University of Ljubljana · How this site is made