There are 85 zip codes in Worcester County, Massachusetts. The most populated is 1453, located in Leominster. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
01453Leominster43,550
01420Fitchburg41,661
01604Worcester40,724
01545Shrewsbury38,734
01605Worcester30,590
01757Milford30,411
01610Worcester27,033
01602Worcester25,869
01609Worcester23,256
01606Worcester22,636
01581Westborough21,360
01440Gardner21,231
01603Worcester20,678
01570Webster17,671
01550Southbridge17,669
01520Holden16,893
01501Auburn16,763
01532Northborough15,647
01510Clinton15,347
01569Uxbridge14,039
01527Millbury13,852
01331Athol13,845
01507Charlton13,338
01562Spencer11,955
01571Dudley11,885
01462Lunenburg11,765
01540Oxford11,420
01588Whitinsville10,468
01475Winchendon10,180
01772Southborough9,867
01590Sutton9,268
01516Douglas9,213
01504Blackstone9,195
01543Rutland9,102
01607Worcester8,630
01523Lancaster8,395
01473Westminster8,220
01564Sterling8,053
01568Upton7,828
01519Grafton7,634
01583West Boylston7,476
01536North Grafton7,282
01566Sturbridge6,795
01430Ashburnham6,457
01756Mendon6,238
01524Leicester6,077
01747Hopedale6,021
01534Northbridge5,893
01740Bolton5,653
01451Harvard5,362
01608Worcester5,080
01612Paxton5,013
01505Boylston4,855
01585West Brookfield4,841
01005Barre4,837
01535North Brookfield4,750
01560South Grafton4,734
01452Hubbardston4,338
01468Templeton4,009
01436Baldwinville3,694
01503Berlin3,514
01541Princeton3,497
01506Brookfield3,443
01529Millville3,176
01518Fiskdale3,047
01522Jefferson2,890
01542Rochdale2,815
01083Warren2,539
01611Cherry Valley2,188
01515East Brookfield2,120
01537North Oxford1,935
01434Devens1,763
01031Gilbertville1,697
01068Oakham1,585
01368Royalston1,455
01092West Warren1,428
01366Petersham1,177
01531New Braintree984
01074South Barre694
01037Hardwick582
01745Fayville554
01438East Templeton385
01094Wheelwright44
01525Linwood31
01561South Lancaster0
showing: 85 rows

Worcester County, Massachusetts Zip Codes by Population (2024)