2026 Rankings

Highest Energy Costs ZIP Codes in Connecticut — 2026

Last updated: June 4, 2026

433 ZIP codes ranked by Electricity Rate #1: ZIP 06001 (Avon, CT) — 28.3 c/kWh
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 433 ZIP codes with data in Connecticut, these are the highest-ranked areas for electricity rate. See also: National ZIP Codes with Highest Energy Costs | All Connecticut Rankings

Statistic Value
ZIP codes ranked 433
Highest value 28.3 c/kWh
Median value 28.3 c/kWh
State Connecticut

Top 100 Worst ZIP Codes

Rank ZIP Code City State Electricity Rate Safety Score
1 06001 Avon CT 28.3 c/kWh 78/100
2 06002 Bloomfield CT 28.3 c/kWh 69/100
3 06006 Windsor CT 28.3 c/kWh 66/100
4 06010 Bristol CT 28.3 c/kWh 67/100
5 06011 Bristol CT 28.3 c/kWh 83/100
6 06013 Burlington CT 28.3 c/kWh 95/100
7 06016 Broad Brook CT 28.3 c/kWh 87/100
8 06018 Canaan CT 28.3 c/kWh 82/100
9 06019 Canton CT 28.3 c/kWh 88/100
10 06020 Canton Center CT 28.3 c/kWh 73/100
11 06021 Colebrook CT 28.3 c/kWh 63/100
12 06022 Collinsville CT 28.3 c/kWh 66/100
13 06023 East Berlin CT 28.3 c/kWh 73/100
14 06024 East Canaan CT 28.3 c/kWh 63/100
15 06025 East Glastonbury CT 28.3 c/kWh 53/100
16 06026 East Granby CT 28.3 c/kWh 83/100
17 06027 East Hartland CT 28.3 c/kWh 53/100
18 06028 East Windsor Hill CT 28.3 c/kWh 66/100
19 06029 Ellington CT 28.3 c/kWh 73/100
20 06030 Farmington CT 28.3 c/kWh 91/100
21 06031 Falls Village CT 28.3 c/kWh 63/100
22 06032 Farmington CT 28.3 c/kWh 81/100
23 06033 Glastonbury CT 28.3 c/kWh 81/100
24 06034 Farmington CT 28.3 c/kWh 94/100
25 06035 Granby CT 28.3 c/kWh 79/100
26 06037 Berlin CT 28.3 c/kWh 81/100
27 06039 Lakeville CT 28.3 c/kWh 78/100
28 06040 Manchester CT 28.3 c/kWh 86/100
29 06041 Manchester CT 28.3 c/kWh 95/100
30 06042 Manchester CT 28.3 c/kWh 86/100
31 06043 Bolton CT 28.3 c/kWh 67/100
32 06045 Manchester CT 28.3 c/kWh 91/100
33 06050 New Britain CT 28.3 c/kWh 99/100
34 06051 New Britain CT 28.3 c/kWh 95/100
35 06052 New Britain CT 28.3 c/kWh 85/100
36 06053 New Britain CT 28.3 c/kWh 90/100
37 06057 New Hartford CT 28.3 c/kWh 74/100
38 06058 Norfolk CT 28.3 c/kWh 75/100
39 06059 North Canton CT 28.3 c/kWh 53/100
40 06060 North Granby CT 28.3 c/kWh 73/100
41 06061 Pine Meadow CT 28.3 c/kWh 53/100
42 06062 Plainville CT 28.3 c/kWh 82/100
43 06063 Barkhamsted CT 28.3 c/kWh 77/100
44 06064 Poquonock CT 28.3 c/kWh 73/100
45 06065 Riverton CT 28.3 c/kWh 63/100
46 06066 Vernon Rockville CT 28.3 c/kWh 65/100
47 06067 Rocky Hill CT 28.3 c/kWh 81/100
48 06068 Salisbury CT 28.3 c/kWh 82/100
49 06069 Sharon CT 28.3 c/kWh 74/100
50 06070 Simsbury CT 28.3 c/kWh 80/100
51 06071 Somers CT 28.3 c/kWh 70/100
52 06072 Somersville CT 28.3 c/kWh 53/100
53 06073 South Glastonbury CT 28.3 c/kWh 55/100
54 06074 South Windsor CT 28.3 c/kWh 78/100
55 06075 Stafford CT 28.3 c/kWh 66/100
56 06076 Stafford Springs CT 28.3 c/kWh 61/100
57 06077 Staffordville CT 28.3 c/kWh 53/100
58 06078 Suffield CT 28.3 c/kWh 95/100
59 06079 Taconic CT 28.3 c/kWh 53/100
60 06080 Suffield CT 28.3 c/kWh 99/100
61 06081 Tariffville CT 28.3 c/kWh 98/100
62 06082 Enfield CT 28.3 c/kWh 81/100
63 06083 Enfield CT 28.3 c/kWh 94/100
64 06084 Tolland CT 28.3 c/kWh 70/100
65 06085 Unionville CT 28.3 c/kWh 65/100
66 06087 Unionville CT 28.3 c/kWh 66/100
67 06088 East Windsor CT 28.3 c/kWh 82/100
68 06089 Weatogue CT 28.3 c/kWh 90/100
69 06090 West Granby CT 28.3 c/kWh 53/100
70 06091 West Hartland CT 28.3 c/kWh 53/100
71 06092 West Simsbury CT 28.3 c/kWh 63/100
72 06093 West Suffield CT 28.3 c/kWh 66/100
73 06094 Winchester Center CT 28.3 c/kWh 53/100
74 06095 Windsor CT 28.3 c/kWh 65/100
75 06096 Windsor Locks CT 28.3 c/kWh 65/100
76 06098 Winsted CT 28.3 c/kWh 83/100
77 06101 Hartford CT 28.3 c/kWh 91/100
78 06102 Hartford CT 28.3 c/kWh 93/100
79 06103 Hartford CT 28.3 c/kWh 91/100
80 06104 Hartford CT 28.3 c/kWh 93/100
81 06105 Hartford CT 28.3 c/kWh 91/100
82 06106 Hartford CT 28.3 c/kWh 86/100
83 06107 West Hartford CT 28.3 c/kWh 60/100
84 06108 East Hartford CT 28.3 c/kWh 65/100
85 06109 Wethersfield CT 28.3 c/kWh 84/100
86 06110 West Hartford CT 28.3 c/kWh 65/100
87 06111 Newington CT 28.3 c/kWh 83/100
88 06112 Hartford CT 28.3 c/kWh 91/100
89 06114 Hartford CT 28.3 c/kWh 86/100
90 06115 Hartford CT 28.3 c/kWh 91/100
91 06117 West Hartford CT 28.3 c/kWh 60/100
92 06118 East Hartford CT 28.3 c/kWh 60/100
93 06119 West Hartford CT 28.3 c/kWh 65/100
94 06120 Hartford CT 28.3 c/kWh 91/100
95 06123 Hartford CT 28.3 c/kWh 93/100
96 06126 Hartford CT 28.3 c/kWh 93/100
97 06127 West Hartford CT 28.3 c/kWh 66/100
98 06128 East Hartford CT 28.3 c/kWh 66/100
99 06129 Wethersfield CT 28.3 c/kWh 98/100
100 06131 Newington CT 28.3 c/kWh 97/100

Methodology

Energy cost rankings use EIA residential electricity rate data by utility service area, mapped to ZIP codes. Rates are in cents per kilowatt-hour (c/kWh). The national average is approximately 16-17 c/kWh. High energy costs combined with older housing stock indicate significant homeowner burden.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.

Frequently Asked Questions

Why are energy costs included in home safety?

Energy burden is a key factor in home affordability and livability. ZIP codes with high electricity rates and older housing stock face compounding costs: higher bills, more expensive repairs, and greater risk of deferred maintenance that leads to safety hazards.

How can homeowners reduce energy costs?

Federal and state rebates are available for insulation, heat pumps, weatherization, and solar panels. The Inflation Reduction Act provides up to $14,000 in home energy rebates. Check energystar.gov/rebates for eligibility.

Explore More Rankings

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

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Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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