2026 Rankings

Worst CO & Gas Risk ZIP Codes in Massachusetts — 2026

Last updated: August 31, 2026

598 ZIP codes ranked by Gas Risk Score #1: ZIP 01810 (Andover, MA) - 30/100

Out of 598 ZIP codes with data in Massachusetts, these are the highest-ranked areas for gas risk score. See also: National ZIP Codes with Worst CO & Gas Safety Risk | All Massachusetts Rankings

Statistic Value
ZIP codes ranked 598
Highest value 30/100
Median value 3/100
State Massachusetts

Top 100 Worst ZIP Codes

Rank ZIP Code City State Gas Risk Score Safety Score
1 01810 Andover MA 30/100 64/100
2 01812 Andover MA 30/100
3 01830 Haverhill MA 30/100 67/100
4 01831 Haverhill MA 30/100
5 01832 Haverhill MA 30/100 67/100
6 01833 Georgetown MA 30/100 65/100
7 01834 Groveland MA 30/100 50/100
8 01835 Haverhill MA 30/100 67/100
9 01840 Lawrence MA 30/100
10 01841 Lawrence MA 30/100 67/100
11 01842 Lawrence MA 30/100
12 01843 Lawrence MA 30/100 67/100
13 01844 Methuen MA 30/100 65/100
14 01845 North Andover MA 30/100 64/100
15 01860 Merrimac MA 30/100 49/100
16 01867 Reading MA 30/100 67/100
17 01885 West Boxford MA 30/100
18 01899 Andover MA 30/100
19 01901 Lynn MA 30/100 50/100
20 01902 Lynn MA 30/100 50/100
21 01903 Lynn MA 30/100
22 01904 Lynn MA 30/100 50/100
23 01905 Lynn MA 30/100 50/100
24 01906 Saugus MA 30/100 64/100
25 01907 Swampscott MA 30/100 67/100
26 01908 Nahant MA 30/100 65/100
27 01910 Lynn MA 30/100
28 01913 Amesbury MA 30/100 65/100
29 01915 Beverly MA 30/100 67/100
30 01920 Essex County MA 30/100
31 01921 Boxford MA 30/100
32 01922 Byfield MA 30/100
33 01923 Danvers MA 30/100 50/100
34 01927 Essex County MA 30/100
35 01929 Essex MA 30/100
36 01930 Gloucester MA 30/100 67/100
37 01931 Gloucester MA 30/100
38 01936 Hamilton MA 30/100
39 01937 Hathorne MA 30/100
40 01938 Ipswich MA 30/100 50/100
41 01940 Lynnfield MA 30/100 45/100
42 01944 Manchester MA 30/100 50/100
43 01945 Marblehead MA 30/100 67/100
44 01949 Middleton MA 30/100 45/100
45 01950 Newburyport MA 30/100 49/100
46 01951 Newbury MA 30/100 49/100
47 01952 Salisbury MA 30/100 49/100
48 01960 Peabody MA 30/100 50/100
49 01961 Peabody MA 30/100
50 01965 Prides Crossing MA 30/100
51 01966 Rockport MA 30/100 67/100
52 01969 Rowley MA 30/100 49/100
53 01970 Salem MA 30/100 67/100
54 01971 Salem MA 30/100
55 01982 South Hamilton MA 30/100 50/100
56 01983 Topsfield MA 30/100 47/100
57 01984 Wenham MA 30/100 50/100
58 01985 West Newbury MA 30/100 49/100
59 02153 Medford MA 30/100
60 05501 Andover MA 30/100
61 05544 Andover MA 30/100
62 01001 Agawam MA 17/100 83/100
63 01008 Blandford MA 17/100
64 01009 Bondsville MA 17/100
65 01010 Brimfield MA 17/100
66 01011 Chester MA 17/100
67 01013 Chicopee MA 17/100 83/100
68 01014 Chicopee MA 17/100
69 01020 Chicopee MA 17/100 83/100
70 01021 Chicopee MA 17/100
71 01022 Chicopee MA 17/100 83/100
72 01028 East Longmeadow MA 17/100 83/100
73 01034 Granville MA 17/100 81/100
74 01036 Hampden MA 17/100
75 01040 Holyoke MA 17/100 83/100
76 01041 Holyoke MA 17/100
77 01056 Ludlow MA 17/100 83/100
78 01057 Monson MA 17/100 83/100
79 01069 Palmer MA 17/100 83/100
80 01071 Russell MA 17/100
81 01077 Southwick MA 17/100 83/100
82 01079 Thorndike MA 17/100
83 01080 Three Rivers MA 17/100
84 01081 Wales MA 17/100
85 01085 Westfield MA 17/100 83/100
86 01086 Westfield MA 17/100
87 01089 West Springfield MA 17/100 83/100
88 01090 West Springfield MA 17/100
89 01095 Wilbraham MA 17/100 83/100
90 01097 Woronoco MA 17/100
91 01101 Springfield MA 17/100
92 01102 Springfield MA 17/100
93 01103 Springfield MA 17/100
94 01104 Springfield MA 17/100 83/100
95 01105 Springfield MA 17/100 83/100
96 01106 Longmeadow MA 17/100 82/100
97 01107 Springfield MA 17/100 83/100
98 01108 Springfield MA 17/100
99 01109 Springfield MA 17/100 83/100
100 01111 Springfield MA 17/100

Methodology

Gas risk rankings use PHMSA gas distribution incident data (2004-2026), mapped to counties and ZIP codes. Risk scores (0-100) factor in total incidents, fatalities, and recency. Counties with more incidents, deaths, and recent events score highest. Data source: U.S. DOT Pipeline and Hazardous Materials Safety Administration.

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: 2026-08-31.

Frequently Asked Questions

What is a gas distribution incident?

Gas distribution incidents involve failures in the local natural gas pipeline network — the pipes that carry gas from main lines to homes and businesses. These can cause explosions, fires, carbon monoxide poisoning, and property damage. PHMSA tracks all reported incidents nationally.

How can I protect my home from CO and gas leaks?

Install CO detectors on every level of your home (CPSC recommendation). Have gas appliances inspected annually by a licensed technician. Know the signs of a gas leak: rotten egg smell, hissing near gas lines, dead vegetation near pipelines. If you smell gas, leave immediately and call 911.

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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