ZIP codes

ZIP codes in Massachusetts by county

Massachusetts has 539 ZIP codes in its 14 counties. 15 of them cross a county line. Worcester County has the most, 87.

ZIP codes: 539; With 1% or more of their land in the state
Counties: 14; 11 with a page of their own below
Cross a county line: 15; 1% or more of their land in another county
Cross a state line: 0; All of them lie inside the state
County with the most: 87; Worcester County
Most populated ZIP: 02301; 68,969 people · Brockton

ZIP codes per county in Massachusetts

3–32
33–37
38–44
45–87

Counties and their ZIP codes

County	Population (2025)	ZIP codes	Shared
Barnstable County	233,539	48	2
Berkshire County	128,224	35	2
Bristol County	593,640	35	0
Dukes County	21,219	7	1
Essex County	826,653	44	0
Franklin County	70,698	32	3
Hampden County	464,338	40	4
Hampshire County	164,065	27	7
Middlesex County	1,669,979	83	2
Nantucket County	14,758	3	0
Norfolk County	739,749	41	3
Plymouth County	546,829	36	1
Suffolk County	791,891	37	3
Worcester County	888,502	87	3

Every ZIP code in Massachusetts, by county

A ZIP code that crosses a county line appears in each county it has 1% or more of its land in.

Barnstable County (48): 02532, 02534, 02536, 02537, 02540, 02542, 02543, 02553, 02556, 02559, 02561, 02562, 02563, 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
Berkshire County (35): 01008, 01026, 01029, 01201, 01220, 01222, 01223, 01224, 01225, 01226, 01229, 01230, 01235, 01236, 01237, 01238, 01240, 01242, 01244, 01245, 01247, 01253, 01254, 01255, 01256, 01257, 01258, 01259, 01260, 01262, 01264, 01266, 01267, 01270, 01343
Bristol County (35): 02048, 02356, 02357, 02375, 02702, 02703, 02715, 02717, 02718, 02719, 02720, 02721, 02723, 02724, 02725, 02726, 02740, 02743, 02744, 02745, 02746, 02747, 02748, 02760, 02763, 02764, 02766, 02767, 02769, 02771, 02777, 02779, 02780, 02790, 02791
Dukes County (7): 02535, 02539, 02543, 02557, 02568, 02575, 02713
Essex County (44): 01810, 01830, 01832, 01833, 01834, 01835, 01840, 01841, 01843, 01844, 01845, 01860, 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
Franklin County (32): 01002, 01039, 01054, 01072, 01093, 01096, 01301, 01330, 01337, 01338, 01339, 01340, 01341, 01342, 01344, 01346, 01347, 01349, 01350, 01351, 01354, 01355, 01360, 01364, 01367, 01370, 01373, 01375, 01376, 01378, 01379, 01380
Hampden County (40): 01001, 01008, 01009, 01010, 01011, 01013, 01020, 01022, 01028, 01030, 01034, 01036, 01040, 01050, 01056, 01057, 01069, 01071, 01077, 01079, 01080, 01081, 01085, 01089, 01095, 01097, 01103, 01104, 01105, 01106, 01107, 01108, 01109, 01118, 01119, 01128, 01129, 01144, 01151, 01521
Hampshire County (27): 01002, 01003, 01007, 01011, 01012, 01026, 01027, 01032, 01033, 01035, 01038, 01039, 01050, 01053, 01060, 01062, 01063, 01066, 01070, 01073, 01075, 01082, 01084, 01088, 01096, 01098, 01243
Middlesex County (83): 01431, 01432, 01434, 01450, 01460, 01463, 01464, 01469, 01474, 01701, 01702, 01718, 01719, 01720, 01721, 01730, 01731, 01741, 01742, 01746, 01748, 01749, 01752, 01754, 01760, 01770, 01773, 01775, 01776, 01778, 01801, 01803, 01821, 01824, 01826, 01827, 01850, 01851, 01852, 01854, 01862, 01863, 01864, 01867, 01876, 01879, 01880, 01886, 01887, 01890, 02138, 02139, 02140, 02141, 02142, 02143, 02144, 02145, 02148, 02149, 02155, 02176, 02180, 02420, 02421, 02451, 02452, 02453, 02458, 02459, 02460, 02461, 02462, 02464, 02465, 02466, 02467, 02468, 02472, 02474, 02476, 02478, 02493
Nantucket County (3): 02554, 02564, 02584
Norfolk County (41): 02019, 02021, 02025, 02026, 02030, 02032, 02035, 02038, 02052, 02053, 02054, 02056, 02062, 02067, 02071, 02072, 02081, 02090, 02093, 02169, 02170, 02171, 02184, 02186, 02188, 02189, 02190, 02191, 02215, 02322, 02343, 02368, 02445, 02446, 02457, 02467, 02481, 02482, 02492, 02494, 02762
Plymouth County (36): 02043, 02045, 02047, 02050, 02061, 02066, 02301, 02302, 02324, 02325, 02330, 02332, 02333, 02338, 02339, 02341, 02346, 02347, 02350, 02351, 02359, 02360, 02364, 02366, 02367, 02370, 02379, 02382, 02532, 02538, 02558, 02571, 02576, 02738, 02739, 02770
Suffolk County (37): 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, 02150, 02151, 02152, 02163, 02199, 02203, 02205, 02210, 02215, 02445, 02467
Worcester County (87): 01005, 01010, 01031, 01037, 01068, 01074, 01082, 01083, 01092, 01094, 01331, 01366, 01368, 01420, 01430, 01434, 01436, 01438, 01440, 01451, 01452, 01453, 01462, 01468, 01473, 01475, 01501, 01503, 01504, 01505, 01506, 01507, 01510, 01515, 01516, 01518, 01519, 01520, 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, 01740, 01745, 01747, 01756, 01757, 01772

Neighboring states

Tools for Massachusetts

ZIP codes by county or city Any county or city in Massachusetts on an interactive map, with CSV US county map Its counties shaded by population, income or your own data Elevation and places of Massachusetts Its capital, its cities and its highest point, with their elevation

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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