Massachusetts: cities, counties, ZIP codes and districts
Massachusetts has 9 congressional districts, 40 state senate districts and 160 state house districts under the maps in force for November 3, 2026, plus 2,256 voting precincts, 14 counties, 248 cities, towns and Census-designated places, and 539 ZIP codes.
Cities and towns
Largest first. Each page lists the city's county, districts and ZIP codes.
- Boston
- Worcester
- Springfield
- Cambridge
- Lowell
- Brockton
- Quincy
- Lynn
- New Bedford
- Fall River
- Lawrence
- Newton
- Somerville
- Framingham
- Haverhill
- Malden
- Waltham
- Brookline
- Revere
- Medford
- Taunton
- Weymouth Town
- Chicopee
- Peabody
- Methuen
- Everett
- Barnstable Town
- Attleboro
- Arlington
- Salem
- Pittsfield
- Leominster
- Beverly
- Fitchburg
- Marlborough
- Woburn
- Westfield
- Chelsea
- Amherst Town
- Braintree Town
- Holyoke
- Watertown
- Randolph Town
- Lexington
- Franklin Town
- Needham
- Norwood
- North Attleborough Town
- Melrose
- Gloucester
- Northampton
- Wellesley
- West Springfield Town
- Agawam Town
- Bridgewater Town
- Milton
- Saugus
- Danvers
- Belmont
- Wakefield
- Milford
- Burlington
- Reading
- Dedham
- Wilmington
- Stoneham
- Winchester
- Gardner
- Marblehead
- Winthrop Town
- Somerset
- Newburyport
- Greenfield
- Southbridge Town
- Amesbury
- Abington
- Easthampton
- Longmeadow
- Hudson
- Swampscott
- Lynnfield
- North Adams
- Palmer Town
- Webster
- South Yarmouth
- Holbrook
- Maynard
- Nantucket
- Hull
- Andover
- Athol
- Clinton
- Middleborough Center
- Mansfield Center
- Plymouth
- Pinehurst
- Medfield
- Cochituate
- Whitinsville
- Northborough
- West Concord
- East Falmouth
- West Yarmouth
- Ware
- Foxborough
- Sharon
- Walpole
- Hingham
- Oxford
- Spencer
- Kingston
- Salisbury
- Scituate
- Bliss Corner
- Adams
- North Scituate
- Yarmouth Port
- East Harwich
- Rockport
- Smith Mills
- Bellingham
- Ocean Bluff-Brant Rock
- North Westport
- Marshfield
- The Pinehills
- Turners Falls
- Millis-Clicquot
- Ipswich
- Raynham Center
- Williamstown
- Northwest Harwich
- Buzzards Bay
- Westborough
- Winchendon
- Forestdale
- Wilbraham
- North Plymouth
- Hopedale
- South Dennis
- Sagamore
- Falmouth
- East Sandwich
- Orange
- North Pembroke
- Dennis Port
- South Duxbury
- Nahant
- Provincetown
- North Falmouth
- North Lakeville
- Mattapoisett Center
- Belchertown
- Upton
- Littleton Common
- Acushnet Center
- Sandwich
- Ayer
- Wareham Center
- Ocean Grove
- Topsfield
- Pocasset
- Fiskdale
- Monument Beach
- Vineyard Haven
- North Seekonk
- Cordaville
- East Douglas
- Norton Center
- Hopkinton
- East Dennis
- Marshfield Hills
- Dover
- Boxford
- Dennis
- Pepperell
- Sturbridge
- Oak Bluffs
- West Dennis
- North Eastham
- North Brookfield
- Great Barrington
- Cedar Crest
- West Wareham
- White Island Shores
- Rutland
- East Pepperell
- Baldwinville
- Weweantic
- Brewster
- Hanson
- Harwich Center
- Monson Center
- South Deerfield
- Harwich Port
- Duxbury
- Lee
- South Lancaster
- West Falmouth
- Lunenburg
- Orleans
- Shelburne Falls
- Devens
- Teaticket
- Lenox
- West Chatham
- Onset
- Shirley
- Chatham
- Holland
- Rowley
- Essex
- Hanscom AFB
- Bourne
- Hatfield
- West Brookfield
- Groton
- Warren
- Granby
- East Brookfield
- Townsend
- Marion Center
- South Ashburnham
- Edgartown
- Housatonic
- Mashpee Neck
- Northfield
- Barre
- Millers Falls
- Huntington
- New Seabury
- Woods Hole
- Brookfield
- West Warren
- Russell
- Chester
- Cheshire
- Siasconset
- Deerfield
- Lenox Dale
- Seabrook
- Green Harbor
- Madaket
- Blandford
- Popponesset
- Petersham
- Monomoscoy Island
- Seconsett Island
- Popponesset Island
Congressional districts (2026)
| District | Short | 2020 population |
|---|---|---|
| Massachusetts's 1st congressional district | MA-01 | 781,103 |
| Massachusetts's 2nd congressional district | MA-02 | 781,101 |
| Massachusetts's 3rd congressional district | MA-03 | 781,102 |
| Massachusetts's 4th congressional district | MA-04 | 781,103 |
| Massachusetts's 5th congressional district | MA-05 | 781,101 |
| Massachusetts's 6th congressional district | MA-06 | 781,101 |
| Massachusetts's 7th congressional district | MA-07 | 781,102 |
| Massachusetts's 8th congressional district | MA-08 | 781,102 |
| Massachusetts's 9th congressional district | MA-09 | 781,102 |
ZIP codes in Massachusetts
Each page lists the ZIP's congressional and legislative districts, with population shares where it's split.
- 01001
- 01002
- 01003
- 01005
- 01007
- 01008
- 01009
- 01010
- 01011
- 01012
- 01013
- 01020
- 01022
- 01026
- 01027
- 01028
- 01029
- 01030
- 01031
- 01032
- 01033
- 01034
- 01035
- 01036
- 01037
- 01038
- 01039
- 01040
- 01050
- 01053
- 01054
- 01056
- 01057
- 01060
- 01062
- 01063
- 01066
- 01068
- 01069
- 01070
- 01071
- 01072
- 01073
- 01074
- 01075
- 01077
- 01079
- 01080
- 01081
- 01082
- 01083
- 01084
- 01085
- 01088
- 01089
- 01092
- 01093
- 01094
- 01095
- 01096
- 01097
- 01098
- 01103
- 01104
- 01105
- 01106
- 01107
- 01108
- 01109
- 01118
- 01119
- 01128
- 01129
- 01144
- 01151
- 01201
- 01220
- 01222
- 01223
- 01224
- 01225
- 01226
- 01229
- 01230
- 01235
- 01236
- 01237
- 01238
- 01240
- 01242
- 01243
- 01244
- 01245
- 01247
- 01253
- 01254
- 01255
- 01256
- 01257
- 01258
- 01259
- 01260
- 01262
- 01264
- 01266
- 01267
- 01270
- 01301
- 01330
- 01331
- 01337
- 01338
- 01339
- 01340
- 01341
- 01342
- 01343
- 01344
- 01346
- 01347
- 01349
- 01350
- 01351
- 01354
- 01355
- 01360
- 01364
- 01366
- 01367
- 01368
- 01370
- 01373
- 01375
- 01376
- 01378
- 01379
- 01380
- 01420
- 01430
- 01431
- 01432
- 01434
- 01436
- 01438
- 01440
- 01450
- 01451
- 01452
- 01453
- 01460
- 01462
- 01463
- 01464
- 01468
- 01469
- 01473
- 01474
- 01475
- 01501
- 01503
- 01504
- 01505
- 01506
- 01507
- 01510
- 01515
- 01516
- 01518
- 01519
- 01520
- 01521
- 01522
- 01523
- 01524
- 01525
- 01527
- 01529
- 01531
- 01532
- 01534
- 01535
- 01536
- 01537
- 01540
- 01541
- 01542
- 01543
- 01545
- 01550
- 01560
- 01561
- 01562
- 01564
- 01566
- 01568
- 01569
- 01570
- 01571
- 01581
- 01583
- 01585
- 01588
- 01590
- 01602
- 01603
- 01604
- 01605
- 01606
- 01607
- 01608
- 01609
- 01610
- 01611
- 01612
- 01701
- 01702
- 01718
- 01719
- 01720
- 01721
- 01730
- 01731
- 01740
- 01741
- 01742
- 01745
- 01746
- 01747
- 01748
- 01749
- 01752
- 01754
- 01756
- 01757
- 01760
- 01770
- 01772
- 01773
- 01775
- 01776
- 01778
- 01801
- 01803
- 01810
- 01821
- 01824
- 01826
- 01827
- 01830
- 01832
- 01833
- 01834
- 01835
- 01840
- 01841
- 01843
- 01844
- 01845
- 01850
- 01851
- 01852
- 01854
- 01860
- 01862
- 01863
- 01864
- 01867
- 01876
- 01879
- 01880
- 01886
- 01887
- 01890
- 01901
- 01902
- 01904
- 01905
- 01906
- 01907
- 01908
- 01913
- 01915
- 01921
- 01922
- 01923
- 01929
- 01930
- 01937
- 01938
- 01940
- 01944
- 01945
- 01949
- 01950
- 01951
- 01952
- 01960
- 01965
- 01966
- 01969
- 01970
- 01982
- 01983
- 01984
- 01985
- 02019
- 02021
- 02025
- 02026
- 02030
- 02032
- 02035
- 02038
- 02043
- 02045
- 02047
- 02048
- 02050
- 02052
- 02053
- 02054
- 02056
- 02061
- 02062
- 02066
- 02067
- 02071
- 02072
- 02081
- 02090
- 02093
- 02108
- 02109
- 02110
- 02111
- 02113
- 02114
- 02115
- 02116
- 02118
- 02119
- 02120
- 02121
- 02122
- 02124
- 02125
- 02126
- 02127
- 02128
- 02129
- 02130
- 02131
- 02132
- 02133
- 02134
- 02135
- 02136
- 02138
- 02139
- 02140
- 02141
- 02142
- 02143
- 02144
- 02145
- 02148
- 02149
- 02150
- 02151
- 02152
- 02155
- 02163
- 02169
- 02170
- 02171
- 02176
- 02180
- 02184
- 02186
- 02188
- 02189
- 02190
- 02191
- 02199
- 02203
- 02205
- 02210
- 02215
- 02301
- 02302
- 02322
- 02324
- 02325
- 02330
- 02332
- 02333
- 02338
- 02339
- 02341
- 02343
- 02346
- 02347
- 02350
- 02351
- 02356
- 02357
- 02359
- 02360
- 02364
- 02366
- 02367
- 02368
- 02370
- 02375
- 02379
- 02382
- 02420
- 02421
- 02445
- 02446
- 02451
- 02452
- 02453
- 02457
- 02458
- 02459
- 02460
- 02461
- 02462
- 02464
- 02465
- 02466
- 02467
- 02468
- 02472
- 02474
- 02476
- 02478
- 02481
- 02482
- 02492
- 02493
- 02494
- 02532
- 02534
- 02535
- 02536
- 02537
- 02538
- 02539
- 02540
- 02542
- 02543
- 02553
- 02554
- 02556
- 02557
- 02558
- 02559
- 02561
- 02562
- 02563
- 02564
- 02568
- 02571
- 02575
- 02576
- 02584
- 02601
- 02630
- 02631
- 02632
- 02633
- 02635
- 02637
- 02638
- 02639
- 02641
- 02642
- 02643
- 02644
- 02645
- 02646
- 02647
- 02648
- 02649
- 02650
- 02652
- 02653
- 02655
- 02657
- 02659
- 02660
- 02663
- 02664
- 02666
- 02667
- 02668
- 02670
- 02671
- 02672
- 02673
- 02675
- 02702
- 02703
- 02713
- 02715
- 02717
- 02718
- 02719
- 02720
- 02721
- 02723
- 02724
- 02725
- 02726
- 02738
- 02739
- 02740
- 02743
- 02744
- 02745
- 02746
- 02747
- 02748
- 02760
- 02762
- 02763
- 02764
- 02766
- 02767
- 02769
- 02770
- 02771
- 02777
- 02779
- 02780
- 02790
- 02791
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Your agent can list, look up and map every district and precinct in Massachusetts. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
list_geographies(country="US", level="congressional_district", region="MA")