Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/MA/COUNTY/MIDDLESEX

Middlesex County, MA ZIP codes

There are 110 ZIP codes in Middlesex County, MA, in 77 towns, from 01431 to 02495. The largest are 02148 (Malden), 02155 (Medford) and 02149 (Everett).

The county seats are Cambridge and Lowell.

ZIP codes
110
Towns
77
County seats
Cambridge, Lowell
County FIPS
25017
Population
1,638,365
Median household income
$130,847
Land area
818 sq mi
Area codes
339, 351, 508, 617, 774, 781, 857, 978

Middlesex County ZIP codes by town

Cambridge (county seat)
02138, 02139, 02140, 02141, 02142, 02238
Lowell (county seat)
01850, 01851, 01852, 01853, 01854

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Middlesex County ZIP codes

0143101432014500146001463014640146901470014710147201474017010170201703017040170501718017190172001721017300173101741017420174601748017490175201754017600177001773017750177601778017840180101803018050181301815018210182201824018250182601827018500185101852018530185401862018630186401865018660186701876018790188001886018870188801889018900213802139021400214102142021430214402145021480214902153021550215602176021800221202238024200242102451024520245302454024550245602458024590246002461024620246402465024660246802471024720247402475024760247702478024790249302495

The ZIP codes of Middlesex County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Middlesex County in numbers

About 1,638,365 people live in Middlesex County, in 634,215 households, the most populous of Massachusetts's 14 counties. The median household income is $130,847 a year, 26% above the Massachusetts median of $103,960 (US: $80,734). The median owner-occupied home is valued at $727,800 (29% above the Massachusetts median), and median gross rent is $2,201 a month. The median age is 38.9; 59.5% of adults 25 and over hold a bachelor's degree or higher (47.3% across Massachusetts); the average commute takes 30 minutes.

Population1,638,365Middlesex1,638,365
Households634,215Middlesex634,215
Median age38.9Middlesex38.9Massachusetts40.0US 38.9
Median household income$130,847Middlesex$130,847Massachusetts$103,960US $80,734
Median home value$727,800Middlesex$727,800Massachusetts$562,100US $332,700
Median gross rent$2,201Middlesex$2,201Massachusetts$1,762US $1,413
Bachelor's degree or higher59.5%Middlesex59.5%Massachusetts47.3%US 35.7%
Mean commute29.9 minMiddlesex29.9 minMassachusetts29.1 minUS 26.4 min
Population density2,003 / sq miMiddlesex2,003 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Middlesex County

Largest towns in Middlesex County
TownZIP codesPopulation
Boston 1 666,442
Cambridge 6 118,796
Lowell 5 118,368
Newton 1 89,044
Somerville 3 81,036
Framingham 5 72,399
Malden 1 65,906
Waltham 4 64,902
Medford 2 59,354
Everett 1 50,045
Arlington 2 46,350
Woburn 4 41,939
Marlborough 1 41,647
Natick 1 36,782
Watertown 3 35,543

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Middlesex County.

Not sure you are in Middlesex County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Middlesex County, with figures

ZIP codes in Middlesex County
ZIP City Type Population Median income Median home
01431 Ashby , MA Standard 3,211 $115,598 $390,500
01432 Ayer , MA Standard 8,521 $101,966 $463,800
01450 Groton , MA Standard 11,356 $193,292 $743,400
01460 Littleton , MA Standard 10,280 $149,722 $658,300
01463 Pepperell , MA Standard 11,697 $123,911 $482,100
01464 Shirley , MA Standard 6,976 $122,365 $427,600
01469 Townsend , MA Standard 6,820 $103,801 $425,800
01470 Groton , MA No street area — — —
01471 Groton , MA No street area — — —
01472 West Groton , MA No street area — — —
01474 West Townsend , MA Standard 2,280 $136,371 $460,200
01701 Framingham , MA Standard 32,618 $137,094 $644,300
01702 Framingham , MA Standard 39,789 $82,496 $583,000
01703 Framingham , MA No street area — — —
01704 Framingham , MA No street area — — —
01705 Framingham , MA No street area — — —
01718 Acton , MA Standard 404 $104,167 $375,800
01719 Boxborough , MA Standard 5,496 $144,611 $706,900
01720 Acton , MA Standard 23,526 $159,010 $814,300
01721 Ashland , MA Standard 18,873 $127,539 $611,700
01730 Bedford , MA Standard 14,707 $172,400 $898,500
01731 Hanscom Afb , MA Standard 2,110 $104,688 —
01741 Carlisle , MA Standard 5,239 $250,000+ $1,103,900
01742 Concord , MA Standard 18,448 $195,125 $1,218,100
01746 Holliston , MA Standard 15,094 $159,817 $650,300
01748 Hopkinton , MA Standard 19,358 $222,801 $802,700
01749 Hudson , MA Standard 20,077 $103,400 $496,800
01752 Marlborough , MA Standard 41,647 $91,968 $513,100
01754 Maynard , MA Standard 10,712 $124,067 $527,400
01760 Natick , MA Standard 36,782 $138,563 $821,300
01770 Sherborn , MA Standard 4,427 $250,000+ $1,026,800
01773 Lincoln , MA Standard 4,891 $209,327 $1,200,800
01775 Stow , MA Standard 7,165 $185,809 $729,600
01776 Sudbury , MA Standard 19,270 $236,509 $988,900
01778 Wayland , MA Standard 14,033 $219,375 $977,300
01784 Woodville , MA No street area — — —
01801 Woburn , MA Standard 41,939 $111,185 $673,500
01803 Burlington , MA Standard 26,274 $146,436 $740,600
01805 Burlington , MA No street area — — —
01813 Woburn , MA No street area — — —
01815 Woburn , MA No street area — — —
01821 Billerica , MA Standard 30,143 $149,042 $615,100
01822 Billerica , MA No street area — — —
01824 Chelmsford , MA Standard 26,650 $140,050 $619,700
01825 North Reading , MA No street area — — —
01826 Dracut , MA Standard 32,629 $114,196 $473,800
01827 Dunstable , MA Standard 3,408 $208,512 $674,000
01850 Lowell , MA Standard 17,740 $69,780 $390,800
01851 Lowell , MA Standard 33,403 $92,401 $467,000
01852 Lowell , MA Standard 37,144 $80,906 $424,300
01853 Lowell , MA No street area — — —
01854 Lowell , MA Standard 30,081 $72,709 $412,000
01862 North Billerica , MA Standard 12,129 $138,571 $586,200
01863 North Chelmsford , MA Standard 9,796 $144,875 $491,600
01864 North Reading , MA Standard 15,765 $147,768 $710,500
01865 Nutting Lake , MA No street area — — —
01866 Pinehurst , MA No street area — — —
01867 Reading , MA Standard 25,612 $165,912 $809,000
01876 Tewksbury , MA Standard 31,004 $130,204 $577,000
01879 Tyngsboro , MA Standard 12,550 $129,348 $552,500
01880 Wakefield , MA Standard 27,793 $134,306 $723,500
01886 Westford , MA Standard 24,690 $187,198 $748,500
01887 Wilmington , MA Standard 23,336 $168,152 $680,500
01888 Woburn , MA No street area — — —
01889 North Reading , MA No street area — — —
01890 Winchester , MA Standard 23,406 $230,198 $1,215,200
02138 Cambridge , MA Standard 38,509 $119,967 $1,212,400
02139 Cambridge , MA Standard 40,033 $134,586 $1,087,500
02140 Cambridge , MA Standard 21,204 $135,286 $1,149,800
02141 Cambridge , MA Standard 14,517 $126,522 $868,100
02142 Cambridge , MA Standard 4,737 $147,723 $1,954,500
02143 Somerville , MA Standard 25,513 $130,753 $926,800
02144 Somerville , MA Standard 25,448 $150,313 $988,800
02145 Somerville , MA Standard 27,495 $123,755 $828,600
02148 Malden , MA Standard 65,906 $100,606 $633,500
02149 Everett , MA Standard 50,045 $85,218 $610,000
02153 Medford , MA No street area — — —
02155 Medford , MA Standard 61,730 $129,700 $755,500
02156 West Medford , MA No street area — — —
02176 Melrose , MA Standard 29,650 $133,953 $822,900
02180 Stoneham , MA Standard 23,355 $113,964 $671,900
02212 Boston , MA No street area — — —
02238 Cambridge , MA No street area — — —
02420 Lexington , MA Standard 16,215 $245,031 $1,200,300
02421 Lexington , MA Standard 18,080 $227,813 $1,205,700
02451 Waltham , MA Standard 17,393 $122,335 $753,000
02452 Waltham , MA Standard 15,808 $118,431 $808,300
02453 Waltham , MA Standard 31,591 $115,366 $705,100
02454 Waltham , MA No street area — — —
02455 North Waltham , MA No street area — — —
02456 New Town , MA No street area — — —
02458 Newton , MA Standard 13,050 $153,520 $1,136,100
02459 Newton Center , MA Standard 18,449 $227,594 $1,450,900
02460 Newtonville , MA Standard 10,099 $177,837 $1,224,600
02461 Newton Highlands , MA Standard 6,975 $224,000 $1,255,400
02462 Newton Lower Falls , MA Standard 1,470 $216,339 $1,210,700
02464 Newton Upper Falls , MA Standard 3,833 $105,729 $940,200
02465 West Newton , MA Standard 11,697 $194,265 $1,159,200
02466 Auburndale , MA Standard 8,679 $170,089 $1,174,000
02468 Waban , MA Standard 5,773 $250,000+ $1,846,600
02471 Watertown , MA No street area — — —
02472 Watertown , MA Standard 35,620 $126,336 $784,600
02474 Arlington , MA Standard 28,642 $150,560 $933,200
02475 Arlington Heights , MA No street area — — —
02476 Arlington , MA Standard 17,708 $151,131 $934,800
02477 Watertown , MA No street area — — —
02478 Belmont , MA Standard 27,175 $183,137 $1,159,000
02479 Waverley , MA No street area — — —
02493 Weston , MA Standard 11,579 $250,000+ $1,694,400
02495 Nonantum , MA No street area — — —

Cite this page

zipcodes.pro. “Middlesex County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ma/county/middlesex

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