| Zip code | City | State | Number of returns | Total income ($1000) | Avg income/return |
| 06830 | Greenwich | Connecticut | 12,380 | $7,771,682 | $627,761 |
| 06831 | Greenwich | Connecticut | 7,510 | $4,565,216 | $607,885 |
| 06890 | Southport | Connecticut | 2,120 | $1,151,469 | $543,146 |
| 06840 | New Canaan | Connecticut | 9,250 | $4,904,640 | $530,231 |
| 06878 | Riverside | Connecticut | 3,590 | $1,776,121 | $494,741 |
| 06820 | Darien | Connecticut | 9,310 | $4,593,914 | $493,439 |
| 06870 | Old Greenwich | Connecticut | 3,280 | $1,451,830 | $442,631 |
| 06853 | Norwalk | Connecticut | 1,770 | $644,609 | $364,186 |
| 06880 | Westport | Connecticut | 12,710 | $4,580,219 | $360,363 |
| 06883 | Weston | Connecticut | 4,520 | $1,502,778 | $332,473 |
| 06897 | Wilton | Connecticut | 8,340 | $2,349,113 | $281,668 |
| 06903 | Stamford | Connecticut | 7,060 | $1,658,436 | $234,906 |
| 06793 | Washington | Connecticut | 570 | $131,739 | $231,121 |
| 06877 | Ridgefield | Connecticut | 11,550 | $2,584,339 | $223,752 |
| 06807 | Cos Cob | Connecticut | 3,490 | $755,520 | $216,481 |
| 06525 | Woodbridge | Connecticut | 4,470 | $851,847 | $190,570 |
| 06824 | Fairfield | Connecticut | 14,830 | $2,787,624 | $187,972 |
| 06073 | South Glastonbury | Connecticut | 2,780 | $520,063 | $187,073 |
| 06612 | Easton | Connecticut | 3,530 | $646,877 | $183,251 |
| 06426 | Essex | Connecticut | 1,780 | $313,237 | $175,976 |
| 06896 | Redding | Connecticut | 4,180 | $727,611 | $174,070 |
| 06001 | Avon | Connecticut | 9,250 | $1,602,694 | $173,264 |
| 06092 | West Simsbury | Connecticut | 1,980 | $337,227 | $170,317 |
| 06117 | West Hartford | Connecticut | 7,050 | $1,177,829 | $167,068 |
| 06069 | Sharon | Connecticut | 1,170 | $179,833 | $153,703 |
| 06783 | Roxbury | Connecticut | 1,140 | $171,918 | $150,805 |
| 06785 | South Kent | Connecticut | 310 | $45,594 | $147,077 |
| 06090 | West Granby | Connecticut | 560 | $79,993 | $142,845 |
| 06752 | Bridgewater | Connecticut | 840 | $117,001 | $139,287 |
| 06107 | West Hartford | Connecticut | 9,430 | $1,310,864 | $139,010 |
| 06070 | Simsbury | Connecticut | 7,470 | $1,017,432 | $136,202 |
| 06032 | Farmington | Connecticut | 9,370 | $1,264,453 | $134,947 |
| 06443 | Madison | Connecticut | 8,960 | $1,187,294 | $132,510 |
| 06371 | Old Lyme | Connecticut | 5,000 | $650,835 | $130,167 |
| 06378 | Stonington | Connecticut | 2,890 | $372,588 | $128,923 |
| 06470 | Newtown | Connecticut | 7,440 | $950,205 | $127,716 |
| 06060 | North Granby | Connecticut | 1,210 | $153,916 | $127,203 |
| 06437 | Guilford | Connecticut | 11,060 | $1,368,603 | $123,743 |
| 06089 | Weatogue | Connecticut | 1,430 | $176,621 | $123,511 |
| 06901 | Stamford | Connecticut | 4,220 | $517,710 | $122,680 |
| 06033 | Glastonbury | Connecticut | 14,260 | $1,712,512 | $120,092 |
| 06794 | Washington Depot | Connecticut | 610 | $72,260 | $118,459 |
| 06482 | Sandy Hook | Connecticut | 5,080 | $588,284 | $115,804 |
| 06777 | New Preston Marble Dale | Connecticut | 890 | $102,380 | $115,034 |
| 06762 | Middlebury | Connecticut | 3,720 | $424,735 | $114,176 |
| 06477 | Orange | Connecticut | 7,080 | $790,162 | $111,605 |
| 06524 | Bethany | Connecticut | 2,740 | $305,534 | $111,509 |
| 06039 | Lakeville | Connecticut | 1,100 | $122,028 | $110,935 |
| 06784 | Sherman | Connecticut | 1,820 | $201,154 | $110,524 |
| 06796 | West Cornwall | Connecticut | 440 | $47,976 | $109,036 |
| 06103 | Hartford | Connecticut | 1,030 | $111,456 | $108,210 |
| 06078 | Suffield | Connecticut | 5,080 | $542,222 | $106,737 |
| 06468 | Monroe | Connecticut | 9,470 | $1,008,954 | $106,542 |
| 06422 | Durham | Connecticut | 3,640 | $386,645 | $106,221 |
| 06019 | Canton | Connecticut | 4,810 | $510,593 | $106,152 |
| 06611 | Trumbull | Connecticut | 17,010 | $1,762,368 | $103,608 |
| 06333 | East Lyme | Connecticut | 3,350 | $346,264 | $103,362 |
| 06410 | Cheshire | Connecticut | 13,320 | $1,374,965 | $103,226 |
| 06825 | Fairfield | Connecticut | 9,640 | $988,936 | $102,587 |
| 06013 | Burlington | Connecticut | 4,690 | $480,060 | $102,358 |
| 06905 | Stamford | Connecticut | 11,030 | $1,127,592 | $102,230 |
| 06759 | Litchfield | Connecticut | 2,930 | $298,925 | $102,022 |
| 06756 | Goshen | Connecticut | 1,430 | $144,700 | $101,189 |
| 06419 | Killingworth | Connecticut | 3,140 | $316,493 | $100,794 |
| 06812 | New Fairfield | Connecticut | 6,710 | $668,432 | $99,617 |
| 06798 | Woodbury | Connecticut | 5,050 | $498,739 | $98,760 |
| 06754 | Cornwall Bridge | Connecticut | 750 | $73,384 | $97,845 |
| 06804 | Brookfield | Connecticut | 8,620 | $842,567 | $97,746 |
| 06447 | Marlborough | Connecticut | 3,070 | $295,772 | $96,343 |
| 06412 | Chester | Connecticut | 1,960 | $185,104 | $94,441 |
| 06068 | Salisbury | Connecticut | 730 | $68,923 | $94,415 |
| 06084 | Tolland | Connecticut | 7,220 | $680,123 | $94,200 |
| 06248 | Hebron | Connecticut | 2,780 | $260,807 | $93,815 |
| 06488 | Southbury | Connecticut | 9,890 | $924,354 | $93,463 |
| 06071 | Somers | Connecticut | 4,590 | $425,736 | $92,753 |
| 06085 | Unionville | Connecticut | 3,530 | $327,060 | $92,652 |
| 06475 | Old Saybrook | Connecticut | 5,510 | $508,581 | $92,301 |
| 06855 | Norwalk | Connecticut | 4,170 | $383,820 | $92,043 |
| 06021 | Colebrook | Connecticut | 320 | $29,046 | $90,769 |
| 06438 | Haddam | Connecticut | 1,300 | $116,220 | $89,400 |
| 06355 | Mystic | Connecticut | 6,860 | $611,877 | $89,195 |
| 06231 | Amston | Connecticut | 1,810 | $161,155 | $89,036 |
| 06043 | Bolton | Connecticut | 2,610 | $231,301 | $88,621 |
| 06074 | South Windsor | Connecticut | 13,160 | $1,165,239 | $88,544 |
| 06420 | Salem | Connecticut | 2,110 | $186,581 | $88,427 |
| 06035 | Granby | Connecticut | 3,750 | $330,824 | $88,220 |
| 06405 | Branford | Connecticut | 15,340 | $1,350,192 | $88,018 |
| 06423 | East Haddam | Connecticut | 2,480 | $217,436 | $87,676 |
| 06478 | Oxford | Connecticut | 6,180 | $536,083 | $86,745 |
| 06093 | West Suffield | Connecticut | 1,720 | $148,369 | $86,261 |
| 06510 | New Haven | Connecticut | 1,530 | $131,871 | $86,190 |
| 06907 | Stamford | Connecticut | 4,900 | $420,714 | $85,860 |
| 06902 | Stamford | Connecticut | 34,030 | $2,898,279 | $85,168 |
| 06441 | Higganum | Connecticut | 2,800 | $236,116 | $84,327 |
| 06026 | East Granby | Connecticut | 2,730 | $230,031 | $84,260 |
| 06057 | New Hartford | Connecticut | 3,410 | $286,726 | $84,084 |
| 06442 | Ivoryton | Connecticut | 1,420 | $117,851 | $82,994 |
| 06029 | Ellington | Connecticut | 7,970 | $661,420 | $82,989 |
| 06268 | Storrs Mansfield | Connecticut | 3,200 | $263,728 | $82,415 |
| 06850 | Norwalk | Connecticut | 10,030 | $825,138 | $82,267 |
| 06851 | Norwalk | Connecticut | 14,390 | $1,173,594 | $81,556 |
| 06416 | Cromwell | Connecticut | 7,490 | $609,747 | $81,408 |
| 06455 | Middlefield | Connecticut | 1,680 | $136,349 | $81,160 |
| 06119 | West Hartford | Connecticut | 7,500 | $606,660 | $80,888 |
| 06281 | Woodstock | Connecticut | 3,140 | $253,111 | $80,609 |
| 06417 | Deep River | Connecticut | 2,330 | $187,389 | $80,424 |
| 06461 | Milford | Connecticut | 7,430 | $595,822 | $80,191 |
| 06791 | Harwinton | Connecticut | 2,840 | $227,671 | $80,166 |
| 06517 | Hamden | Connecticut | 7,570 | $604,526 | $79,858 |
| 06473 | North Haven | Connecticut | 12,580 | $1,002,250 | $79,670 |
| 06259 | Pomfret Center | Connecticut | 1,780 | $141,734 | $79,626 |
| 06484 | Shelton | Connecticut | 20,640 | $1,633,427 | $79,139 |
| 06518 | Hamden | Connecticut | 7,360 | $581,173 | $78,964 |
| 06037 | Kensington | Connecticut | 10,080 | $794,841 | $78,853 |
| 06480 | Portland | Connecticut | 4,760 | $374,745 | $78,728 |
| 06424 | East Hampton | Connecticut | 6,250 | $491,390 | $78,622 |
| 06758 | Lakeside | Connecticut | 90 | $7,037 | $78,189 |
| 06067 | Rocky Hill | Connecticut | 10,540 | $822,113 | $77,999 |
| 06763 | Morris | Connecticut | 1,060 | $82,587 | $77,912 |
| 06498 | Westbrook | Connecticut | 3,550 | $275,697 | $77,661 |
| 06489 | Southington | Connecticut | 16,150 | $1,250,625 | $77,438 |
| 06031 | Falls Village | Connecticut | 600 | $46,235 | $77,058 |
| 06237 | Columbia | Connecticut | 2,790 | $214,763 | $76,976 |
| 06811 | Danbury | Connecticut | 14,600 | $1,123,048 | $76,921 |
| 06232 | Andover | Connecticut | 1,690 | $129,932 | $76,883 |
| 06359 | North Stonington | Connecticut | 2,640 | $201,272 | $76,239 |
| 06795 | Watertown | Connecticut | 7,170 | $545,849 | $76,130 |
| 06472 | Northford | Connecticut | 3,400 | $257,677 | $75,787 |
| 06357 | Niantic | Connecticut | 5,790 | $437,454 | $75,553 |
| 06801 | Bethel | Connecticut | 9,500 | $716,629 | $75,435 |
| 06023 | East Berlin | Connecticut | 730 | $54,560 | $74,740 |
| 06058 | Norfolk | Connecticut | 840 | $62,770 | $74,726 |
| 06415 | Colchester | Connecticut | 8,080 | $602,357 | $74,549 |
| 06460 | Milford | Connecticut | 20,100 | $1,491,041 | $74,181 |
| 06109 | Wethersfield | Connecticut | 14,160 | $1,046,653 | $73,916 |
| 06238 | Coventry | Connecticut | 6,190 | $456,764 | $73,791 |
| 06385 | Waterford | Connecticut | 8,480 | $625,430 | $73,754 |
| 06335 | Gales Ferry | Connecticut | 3,300 | $242,719 | $73,551 |
| 06250 | Mansfield Center | Connecticut | 2,420 | $177,174 | $73,212 |
| 06712 | Prospect | Connecticut | 4,820 | $351,817 | $72,991 |
| 06409 | Centerbrook | Connecticut | 360 | $26,244 | $72,900 |
| 06413 | Clinton | Connecticut | 6,840 | $497,720 | $72,766 |
| 06479 | Plantsville | Connecticut | 4,950 | $359,965 | $72,720 |
| 06471 | North Branford | Connecticut | 4,000 | $290,766 | $72,692 |
| 06027 | East Hartland | Connecticut | 720 | $52,123 | $72,393 |
| 06063 | Pleasant Valley | Connecticut | 1,650 | $119,123 | $72,196 |
| 06757 | Kent | Connecticut | 1,140 | $81,615 | $71,592 |
| 06776 | New Milford | Connecticut | 13,300 | $950,617 | $71,475 |
| 06751 | Bethlehem | Connecticut | 1,880 | $134,120 | $71,340 |
| 06002 | Bloomfield | Connecticut | 11,520 | $819,445 | $71,132 |
| 06755 | Gaylordsville | Connecticut | 560 | $39,612 | $70,736 |
| 06279 | Willington | Connecticut | 2,760 | $194,850 | $70,598 |
| 06492 | Wallingford | Connecticut | 23,280 | $1,638,458 | $70,380 |
| 06254 | North Franklin | Connecticut | 970 | $68,235 | $70,345 |
| 06282 | Woodstock Valley | Connecticut | 540 | $37,839 | $70,072 |
| 06906 | Stamford | Connecticut | 5,090 | $356,364 | $70,013 |
| 06370 | Oakdale | Connecticut | 3,620 | $248,586 | $68,670 |
| 06242 | Eastford | Connecticut | 710 | $48,613 | $68,469 |
| 06379 | Pawcatuck | Connecticut | 4,400 | $299,125 | $67,983 |
| 06614 | Stratford | Connecticut | 16,940 | $1,149,892 | $67,880 |
| 06249 | Lebanon | Connecticut | 3,480 | $234,546 | $67,398 |
| 06339 | Ledyard | Connecticut | 4,210 | $282,563 | $67,117 |
| 06469 | Moodus | Connecticut | 1,540 | $103,211 | $67,020 |
| 06778 | Northfield | Connecticut | 620 | $41,392 | $66,761 |
| 06403 | Beacon Falls | Connecticut | 3,000 | $198,455 | $66,152 |
| 06016 | Broad Brook | Connecticut | 3,320 | $219,365 | $66,074 |
| 06716 | Wolcott | Connecticut | 8,260 | $544,476 | $65,917 |
| 06481 | Rockfall | Connecticut | 570 | $37,430 | $65,667 |
| 06095 | Windsor | Connecticut | 15,580 | $1,018,442 | $65,369 |
| 06375 | Quaker Hill | Connecticut | 1,920 | $125,073 | $65,142 |
| 06365 | Preston | Connecticut | 2,360 | $153,593 | $65,082 |
| 06334 | Bozrah | Connecticut | 1,270 | $82,573 | $65,018 |
| 06247 | Hampton | Connecticut | 1,150 | $74,665 | $64,926 |
| 06278 | Ashford | Connecticut | 2,210 | $142,343 | $64,409 |
| 06065 | Riverton | Connecticut | 410 | $26,403 | $64,398 |
| 06483 | Seymour | Connecticut | 8,280 | $532,575 | $64,321 |
| 06111 | Newington | Connecticut | 16,230 | $1,040,257 | $64,095 |
| 06277 | Thompson | Connecticut | 2,000 | $125,923 | $62,962 |
| 06750 | Bantam | Connecticut | 670 | $41,929 | $62,581 |
| 06854 | Norwalk | Connecticut | 14,250 | $884,231 | $62,051 |
| 06234 | Brooklyn | Connecticut | 3,750 | $232,043 | $61,878 |
| 06782 | Plymouth | Connecticut | 1,210 | $74,750 | $61,777 |
| 06457 | Middletown | Connecticut | 22,490 | $1,383,233 | $61,504 |
| 06331 | Canterbury | Connecticut | 2,440 | $149,030 | $61,078 |
| 06787 | Thomaston | Connecticut | 3,910 | $236,237 | $60,419 |
| 06384 | Voluntown | Connecticut | 1,280 | $77,275 | $60,371 |
| 06264 | Scotland | Connecticut | 330 | $19,882 | $60,248 |
| 06081 | Tariffville | Connecticut | 740 | $44,457 | $60,077 |
| 06066 | Vernon Rockville | Connecticut | 15,270 | $912,570 | $59,762 |
| 06076 | Stafford Springs | Connecticut | 6,100 | $358,472 | $58,766 |
| 06515 | New Haven | Connecticut | 7,100 | $414,303 | $58,353 |
| 06040 | Manchester | Connecticut | 17,670 | $1,030,154 | $58,300 |
| 06280 | Windham | Connecticut | 1,570 | $89,961 | $57,300 |
| 06042 | Manchester | Connecticut | 12,330 | $704,098 | $57,104 |
| 06052 | New Britain | Connecticut | 3,890 | $221,999 | $57,069 |
| 06082 | Enfield | Connecticut | 21,160 | $1,203,023 | $56,854 |
| 06786 | Terryville | Connecticut | 4,810 | $272,894 | $56,735 |
| 06377 | Sterling | Connecticut | 1,260 | $71,177 | $56,490 |
| 06062 | Plainville | Connecticut | 9,330 | $523,079 | $56,064 |
| 06351 | Jewett City | Connecticut | 7,810 | $434,084 | $55,581 |
| 06096 | Windsor Locks | Connecticut | 6,780 | $376,835 | $55,580 |
| 06088 | East Windsor | Connecticut | 2,710 | $149,731 | $55,251 |
| 06010 | Bristol | Connecticut | 30,180 | $1,667,275 | $55,244 |
| 06514 | Hamden | Connecticut | 12,920 | $706,193 | $54,659 |
| 06340 | Groton | Connecticut | 14,040 | $767,356 | $54,655 |
| 06235 | Chaplin | Connecticut | 1,110 | $60,639 | $54,630 |
| 06241 | Dayville | Connecticut | 2,930 | $159,053 | $54,284 |
| 06110 | West Hartford | Connecticut | 6,480 | $348,509 | $53,782 |
| 06330 | Baltic | Connecticut | 1,390 | $74,627 | $53,688 |
| 06615 | Stratford | Connecticut | 9,570 | $510,446 | $53,338 |
| 06770 | Naugatuck | Connecticut | 15,430 | $820,851 | $53,198 |
| 06512 | East Haven | Connecticut | 14,980 | $794,982 | $53,070 |
| 06255 | North Grosvenordale | Connecticut | 2,110 | $111,003 | $52,608 |
| 06266 | South Windham | Connecticut | 300 | $15,733 | $52,443 |
| 06779 | Oakville | Connecticut | 4,150 | $217,505 | $52,411 |
| 06511 | New Haven | Connecticut | 20,570 | $1,064,120 | $51,732 |
| 06098 | Winsted | Connecticut | 5,440 | $280,567 | $51,575 |
| 06418 | Derby | Connecticut | 6,190 | $318,023 | $51,377 |
| 06262 | Quinebaug | Connecticut | 340 | $17,272 | $50,800 |
| 06374 | Plainfield | Connecticut | 3,670 | $186,013 | $50,685 |
| 06790 | Torrington | Connecticut | 17,510 | $885,558 | $50,574 |
| 06450 | Meriden | Connecticut | 17,520 | $883,687 | $50,439 |
| 06382 | Uncasville | Connecticut | 5,270 | $265,430 | $50,366 |
| 06239 | Danielson | Connecticut | 4,980 | $244,916 | $49,180 |
| 06024 | East Canaan | Connecticut | 300 | $14,650 | $48,833 |
| 06354 | Moosup | Connecticut | 2,580 | $125,777 | $48,751 |
| 06256 | North Windham | Connecticut | 1,140 | $55,336 | $48,540 |
| 06810 | Danbury | Connecticut | 23,990 | $1,163,058 | $48,481 |
| 06260 | Putnam | Connecticut | 4,420 | $212,968 | $48,183 |
| 06118 | East Hartford | Connecticut | 13,810 | $657,098 | $47,581 |
| 06451 | Meriden | Connecticut | 11,460 | $540,420 | $47,157 |
| 06105 | Hartford | Connecticut | 8,650 | $407,790 | $47,143 |
| 06401 | Ansonia | Connecticut | 9,130 | $429,553 | $47,049 |
| 06516 | West Haven | Connecticut | 26,040 | $1,217,986 | $46,774 |
| 06708 | Waterbury | Connecticut | 13,730 | $632,252 | $46,049 |
| 06360 | Norwich | Connecticut | 17,650 | $806,782 | $45,710 |
| 06018 | Canaan | Connecticut | 1,440 | $65,667 | $45,602 |
| 06243 | East Killingly | Connecticut | 170 | $7,703 | $45,312 |
| 06353 | Montville | Connecticut | 220 | $9,801 | $44,550 |
| 06053 | New Britain | Connecticut | 15,400 | $625,955 | $40,646 |
| 06606 | Bridgeport | Connecticut | 21,940 | $864,750 | $39,414 |
| 06320 | New London | Connecticut | 12,600 | $488,958 | $38,806 |
| 06108 | East Hartford | Connecticut | 11,740 | $455,486 | $38,798 |
| 06605 | Bridgeport | Connecticut | 10,220 | $386,310 | $37,799 |
| 06705 | Waterbury | Connecticut | 12,360 | $460,837 | $37,285 |
| 06513 | New Haven | Connecticut | 16,470 | $602,360 | $36,573 |
| 06706 | Waterbury | Connecticut | 6,310 | $225,160 | $35,683 |
| 06610 | Bridgeport | Connecticut | 10,670 | $374,265 | $35,076 |
| 06604 | Bridgeport | Connecticut | 11,820 | $408,736 | $34,580 |
| 06226 | Willimantic | Connecticut | 7,060 | $244,083 | $34,573 |
| 06380 | Taftville | Connecticut | 1,240 | $42,861 | $34,565 |
| 06704 | Waterbury | Connecticut | 11,390 | $369,063 | $32,402 |
| 06710 | Waterbury | Connecticut | 4,060 | $129,243 | $31,833 |
| 06051 | New Britain | Connecticut | 12,850 | $385,773 | $30,021 |
| 06106 | Hartford | Connecticut | 15,520 | $460,613 | $29,679 |
| 06114 | Hartford | Connecticut | 11,580 | $342,308 | $29,560 |
| 06519 | New Haven | Connecticut | 6,340 | $181,030 | $28,554 |
| 06112 | Hartford | Connecticut | 9,530 | $269,335 | $28,262 |
| 06607 | Bridgeport | Connecticut | 3,370 | $89,781 | $26,641 |
| 06608 | Bridgeport | Connecticut | 5,360 | $129,052 | $24,077 |
| 06120 | Hartford | Connecticut | 4,440 | $100,932 | $22,732 |
| 06702 | Waterbury | Connecticut | 1,020 | $19,754 | $19,367 |