Middlesex County, Massachusetts ZIP codes
110 ZIP codes are in Middlesex County, plus 2 that cross in from neighboring counties. It's part of the Boston-Cambridge-Newton, MA-NH metro area.
- ZIP codes
- 110
- Population in these ZIPs
- 1,629,277
- Avg. median income
- $139,100population-weighted
- Cities & towns
- 77
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Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Middlesex County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 01431 | Ashby | 3,211 | $115,598 | $473,400 |
| 01432 | Ayer | 8,521 | $101,966 | $569,200 |
| 01450 | Groton | 11,356 | $193,292 | $776,600 |
| 01460 | Littleton | 10,280 | $149,722 | $774,900 |
| 01463 | Pepperell | 11,697 | $123,911 | $596,000 |
| 01464 | Shirley | 6,976 | $122,365 | $551,700 |
| 01469 | Townsend | 6,820 | $103,801 | $502,500 |
| 01470 PO Box | Groton | — | — | — |
| 01471 PO Box | Groton | — | — | — |
| 01472 PO Box | West Groton | — | — | — |
| 01474 | West Townsend | 2,280 | $136,371 | $513,900 |
| 01701 | Framingham | 32,618 | $137,094 | $694,400 |
| 01702 | Framingham | 39,789 | $82,496 | $553,700 |
| 01703 PO Box | Framingham | — | — | — |
| 01704 PO Box | Framingham | — | — | — |
| 01705 PO Box | Framingham | — | — | — |
| 01718 | Acton | 404 | $104,167 | $488,800 |
| 01719 | Boxborough | 5,496 | $144,611 | $759,700 |
| 01720 | Acton | 23,526 | $159,010 | $872,500 |
| 01721 | Ashland | 18,873 | $127,539 | $661,700 |
| 01730 | Bedford | 14,707 | $172,400 | $1,018,900 |
| 01731 | Hanscom Afb | 2,110 | $104,688 | — |
| 01741 | Carlisle | 5,239 | $250,001 | $1,299,300 |
| 01742 | Concord | 18,448 | $195,125 | $1,415,800 |
| 01746 | Holliston | 15,094 | $159,817 | $736,300 |
| 01748 | Hopkinton | 19,358 | $222,801 | $951,900 |
| 01749 | Hudson | 20,077 | $103,400 | $614,500 |
| 01752 | Marlborough | 41,647 | $91,968 | $570,900 |
| 01754 | Maynard | 10,712 | $124,067 | $600,100 |
| 01760 | Natick | 36,782 | $138,563 | $875,700 |
| 01770 | Sherborn | 4,427 | $250,001 | $1,212,700 |
| 01773 | Lincoln | 4,891 | $209,327 | $1,502,200 |
| 01775 | Stow | 7,165 | $185,809 | $806,400 |
| 01776 | Sudbury | 19,270 | $236,509 | $1,128,500 |
| 01778 | Wayland | 14,033 | $219,375 | $1,136,100 |
| 01784 PO Box | Woodville | — | — | — |
| 01801 | Woburn | 41,939 | $111,185 | $753,200 |
| 01803 | Burlington | 26,274 | $146,436 | $867,200 |
| 01805 PO Box | Burlington | — | — | — |
| 01813 PO Box | Woburn | — | — | — |
| 01815 PO Box | Woburn | — | — | — |
| 01821 | Billerica | 30,143 | $149,042 | $696,100 |
| 01822 PO Box | Billerica | — | — | — |
| 01824 | Chelmsford | 26,650 | $140,050 | $708,800 |
| 01825 PO Box | North Reading | — | — | — |
| 01826 | Dracut | 32,629 | $114,196 | $569,800 |
| 01827 | Dunstable | 3,408 | $208,512 | $798,300 |
| 01850 | Lowell | 17,740 | $69,780 | $443,500 |
| 01851 | Lowell | 33,403 | $92,401 | $520,000 |
| 01852 | Lowell | 37,144 | $80,906 | $469,900 |
| 01853 PO Box | Lowell | — | — | — |
| 01854 | Lowell | 30,081 | $72,709 | $476,800 |
| 01862 | North Billerica | 12,129 | $138,571 | $714,500 |
| 01863 | North Chelmsford | 9,796 | $144,875 | $548,100 |
| 01864 | North Reading | 15,765 | $147,768 | $710,500 |
| 01865 PO Box | Nutting Lake | — | — | — |
| 01866 PO Box | Pinehurst | — | — | — |
| 01867 | Reading | 25,612 | $165,912 | $909,500 |
| 01876 | Tewksbury | 31,004 | $130,204 | $671,700 |
| 01879 | Tyngsboro | 12,550 | $129,348 | $647,900 |
| 01880 | Wakefield | 27,793 | $134,306 | $812,600 |
| 01886 | Westford | 24,690 | $187,198 | $827,900 |
| 01887 | Wilmington | 23,336 | $168,152 | $776,200 |
| 01888 PO Box | Woburn | — | — | — |
| 01889 PO Box | North Reading | — | — | — |
| 01890 | Winchester | 23,406 | $230,198 | $1,532,300 |
| 02138 | Cambridge | 38,509 | $119,967 | $1,133,700 |
| 02139 | Cambridge | 40,033 | $134,586 | $990,900 |
| 02140 | Cambridge | 21,204 | $135,286 | $1,066,200 |
| 02141 | Cambridge | 14,517 | $126,522 | $899,600 |
| 02142 | Cambridge | 4,737 | $147,723 | $1,311,400 |
| 02143 | Somerville | 25,513 | $130,753 | $932,500 |
| 02144 | Somerville | 25,448 | $150,313 | $1,027,900 |
| 02145 | Somerville | 27,495 | $123,755 | $815,800 |
| 02148 | Malden | 65,906 | $100,606 | $666,900 |
| 02149 | Everett | 50,045 | $85,218 | $619,900 |
| 02153 PO Box | Medford | — | — | — |
| 02155 | Medford | 61,730 | $129,700 | $817,600 |
| 02156 PO Box | West Medford | — | — | — |
| 02176 | Melrose | 29,650 | $133,953 | $908,200 |
| 02180 | Stoneham | 23,355 | $113,964 | $798,100 |
| 02212 PO Box | Boston | — | — | — |
| 02238 PO Box | Cambridge | — | — | — |
| 02420 | Lexington | 16,215 | $245,031 | $1,506,000 |
| 02421 | Lexington | 18,080 | $227,813 | $1,593,300 |
| 02451 | Waltham | 17,393 | $122,335 | $794,500 |
| 02452 | Waltham | 15,808 | $118,431 | $849,300 |
| 02453 | Waltham | 31,591 | $115,366 | $795,100 |
| 02454 PO Box | Waltham | — | — | — |
| 02455 PO Box | North Waltham | — | — | — |
| 02456 PO Box | New Town | — | — | — |
| 02458 | Newton | 13,050 | $153,520 | $1,232,400 |
| 02459 | Newton Center | 18,449 | $227,594 | $1,791,300 |
| 02460 | Newtonville | 10,099 | $177,837 | $1,344,400 |
| 02461 | Newton Highlands | 6,975 | $224,000 | $1,475,400 |
| 02462 | Newton Lower Falls | 1,470 | $216,339 | $1,295,600 |
| 02464 | Newton Upper Falls | 3,833 | $105,729 | $925,100 |
| 02465 | West Newton | 11,697 | $194,265 | $1,353,500 |
| 02466 | Auburndale | 8,679 | $170,089 | $1,373,000 |
| 02468 | Waban | 5,773 | $250,001 | $2,097,700 |
| 02471 PO Box | Watertown | — | — | — |
| 02472 | Watertown | 35,620 | $126,336 | $810,500 |
| 02474 | Arlington | 28,642 | $150,560 | $1,044,400 |
| 02475 PO Box | Arlington Heights | — | — | — |
| 02476 | Arlington | 17,708 | $151,131 | $1,078,700 |
| 02477 PO Box | Watertown | — | — | — |
| 02478 | Belmont | 27,175 | $183,137 | $1,421,500 |
| 02479 PO Box | Waverley | — | — | — |
| 02493 | Weston | 11,579 | $250,001 | $2,233,500 |
| 02495 PO Box | Nonantum | — | — | — |
ZIP codes partly in Middlesex County
These ZIP codes are mostly in a neighboring county but cover part of Middlesex County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 01434 | Devens | Worcester County | 1,564 | $162,143 | $594,100 |
| 02467 | Chestnut Hill | Norfolk County | 23,001 | $169,104 | $1,182,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Middlesex County
- Ashby
- Ayer
- Groton
- Littleton
- Pepperell
- Shirley
- Townsend
- West Groton
- West Townsend
- Framingham
- Acton
- Boxborough
- Ashland
- Bedford
- Hanscom Afb
- Carlisle
- Concord
- Holliston
- Hopkinton
- Hudson
- Marlborough
- Maynard
- Natick
- Sherborn
- Lincoln
- Stow
- Sudbury
- Wayland
- Woodville
- Woburn
- Burlington
- Billerica
- Chelmsford
- North Reading
- Dracut
- Dunstable
- Lowell
- North Billerica
- North Chelmsford
- Nutting Lake
- Pinehurst
- Reading
- Tewksbury
- Tyngsboro
- Wakefield
- Westford
- Wilmington
- Winchester
- Cambridge
- Somerville
- Malden
- Everett
- Medford
- West Medford
- Melrose
- Stoneham
- Boston
- Lexington
- Waltham
- North Waltham
- New Town
- Newton
- Newton Center
- Newtonville
- Newton Highlands
- Newton Lower Falls
- Newton Upper Falls
- West Newton
- Auburndale
- Waban
- Watertown
- Arlington
- Arlington Heights
- Belmont
- Waverley
- Weston
- Nonantum
Nearby counties
Frequently asked questions
How many ZIP codes are in Middlesex County, Massachusetts?
110 ZIP codes are mainly in Middlesex County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Middlesex County?
ZIP codes in Middlesex County use the city names Acton, Arlington, Arlington Heights, Ashby, Ashland, Auburndale, Ayer, Bedford, Belmont, Billerica, Boston and Boxborough and others.
What metro area is Middlesex County in?
Middlesex County is part of the Boston-Cambridge-Newton, MA-NH metropolitan statistical area.