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/CT/LOWEST-AVERAGE-INCOME

ZIP Codes With the Lowest Average Income in Connecticut

What this measures. Total adjusted gross income divided by tax returns filed, lowest first. ZIP codes with fewer than 200 returns are excluded: the IRS suppresses small cells and the remainder swing too wildly to rank. Source: IRS Statistics of Income, ZIP code data, data release 2026-10-12.

# ZIP City County Average AGI per return
1 06702 Waterbury New Haven $26,609
2 06120 Hartford Hartford $31,486
3 06608 Bridgeport Fairfield $32,321
4 06607 Bridgeport Fairfield $35,344
5 06112 Hartford Hartford $37,831
6 06114 Hartford Hartford $38,673
7 06051 New Britain Hartford $38,685
8 06106 Hartford Hartford $40,342
9 06519 New Haven New Haven $41,021
10 06704 Waterbury New Haven $41,118
11 06380 Taftville New London $42,937
12 06710 Waterbury New Haven $43,377
13 06226 Willimantic Windham $43,605
14 06706 Waterbury New Haven $44,078
15 06604 Bridgeport Fairfield $44,159
16 06610 Bridgeport Fairfield $44,531
17 06705 Waterbury New Haven $45,811
18 06513 New Haven New Haven $46,790
19 06108 East Hartford Hartford $48,307
20 06606 Bridgeport Fairfield $49,232
21 06053 New Britain Hartford $50,925
22 06320 New London New London $51,277
23 06605 Bridgeport Fairfield $53,087
24 06708 Waterbury New Haven $54,279
25 06360 Norwich New London $56,558
26 06118 East Hartford Hartford $56,971
27 06451 Meriden New Haven $57,589
28 06401 Ansonia New Haven $58,534
29 06266 South Windham Windham $59,203
30 06516 West Haven New Haven $59,479
31 06262 Quinebaug Windham $59,759
32 06450 Meriden New Haven $60,102
33 06790 Torrington Litchfield $61,122
34 06810 Danbury Fairfield $61,298
35 06256 North Windham Windham $61,532
36 06105 Hartford Hartford $61,977
37 06354 Moosup Windham $62,755
38 06239 Danielson Windham $63,328
39 06374 Plainfield Windham $64,006
40 06418 Derby New Haven $64,452
41 06052 New Britain Hartford $64,931
42 06260 Putnam Windham $65,607
43 06098 Winsted Litchfield $65,823
44 06018 Canaan Litchfield $65,885
45 06382 Uncasville New London $66,131
46 06770 Naugatuck New Haven $66,136
47 06514 Hamden New Haven $66,565
48 06779 Oakville Litchfield $66,567
49 06512 New Haven New Haven $66,662
50 06010 Bristol Hartford $68,098

Showing the top 50 of 259 ZIP codes in Connecticut that have this figure and meet the threshold above. 06702 ranks 1st at $26,609, against $68,098 in 50th place.

Other rankings for Connecticut

Cite this page

zipcodes.pro. “ZIP Codes With the Lowest Average Income in Connecticut.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/ct/lowest-average-income

Underlying data is public domain or openly licensed — sources, vintages and licences.