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

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — RANKINGS/MA/MOST-TAX-RETURNS

ZIP Codes With the Most Tax Returns Filed in Massachusetts

What this measures. Number of individual income tax returns filed. A rough proxy for how many households a ZIP code contains, available where census figures are not. Source: IRS Statistics of Income, ZIP code data, data release 2026-10-12.

# ZIP City County Returns filed
1 02148 Malden Middlesex 33,260
2 02301 Brockton Plymouth 33,010
3 02360 Plymouth Plymouth 33,010
4 02169 Quincy Norfolk 31,580
5 02155 Medford Middlesex 31,350
6 02151 Revere Suffolk 30,950
7 01844 Methuen Essex 28,790
8 01960 Peabody Essex 28,740
9 02780 Taunton Bristol 27,280
10 01841 Lawrence Essex 26,640
11 02124 Dorchester Center Suffolk 24,930
12 02703 Attleboro Bristol 24,050
13 02135 Brighton Suffolk 23,650
14 01970 Salem Essex 23,510
15 01902 Lynn Essex 23,390
16 02128 Boston Suffolk 23,060
17 02149 Everett Middlesex 23,060
18 01453 Leominster Worcester 22,790
19 01801 Woburn Middlesex 22,790
20 01201 Pittsfield Berkshire 22,190
21 02127 Boston Suffolk 21,930
22 01752 Marlborough Middlesex 21,180
23 01915 Beverly Essex 20,580
24 02740 New Bedford Bristol 20,390
25 02130 Jamaica Plain Suffolk 20,220
26 01420 Fitchburg Worcester 20,090
27 02184 Braintree Norfolk 19,880
28 01085 Westfield Hampden 19,600
29 02472 Watertown Middlesex 19,270
30 02150 Chelsea Suffolk 19,110
31 01545 Shrewsbury Worcester 19,060
32 01604 Worcester Worcester 18,870
33 02139 Cambridge Middlesex 18,550
34 02302 Brockton Plymouth 18,470
35 02368 Randolph Norfolk 18,440
36 01760 Natick Middlesex 18,280
37 02136 Hyde Park Suffolk 18,180
38 01852 Lowell Middlesex 18,010
39 01826 Dracut Middlesex 17,570
40 02125 Dorchester Suffolk 17,340
41 01810 Andover Essex 17,290
42 01701 Framingham Middlesex 17,220
43 02038 Franklin Norfolk 17,010
44 01821 Billerica Middlesex 16,920
45 01702 Framingham Middlesex 16,860
46 01040 Holyoke Hampden 16,820
47 01876 Tewksbury Middlesex 16,560
48 01851 Lowell Middlesex 16,390
49 02062 Norwood Norfolk 16,240
50 02131 Roslindale Suffolk 15,930

Showing the top 50 of 480 ZIP codes in Massachusetts that have this figure . 02148 ranks 1st at 33,260, against 15,930 in 50th place.

Other rankings for Massachusetts

Cite this page

zipcodes.pro. “ZIP Codes With the Most Tax Returns Filed in Massachusetts.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/ma/most-tax-returns

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