Safest ZIP Codes for Gas & CO Risk in New Hampshire ...

Out of 284 ZIP codes with data in New Hampshire, these are the lowest-ranked areas for gas risk score. See also: National Safest ZIP Codes for Gas & CO Risk | All New Hampshire Rankings

Statistic	Value
ZIP codes ranked	284
Lowest value	0/100
Median value	0/100
State	New Hampshire

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Gas Risk Score	Safety Score
1	03031	Amherst	NH	0/100	65/100
2	03033	Brookline	NH	0/100	63/100
3	03034	Candia	NH	0/100	74/100
4	03043	Francestown	NH	0/100	72/100
5	03045	Goffstown	NH	0/100	62/100
6	03046	Dunbarton	NH	0/100	63/100
7	03047	Greenfield	NH	0/100	53/100
8	03048	Greenville	NH	0/100	55/100
9	03049	Hollis	NH	0/100	73/100
10	03051	Hudson	NH	0/100	70/100
11	03052	Litchfield	NH	0/100	83/100
12	03054	Merrimack	NH	0/100	72/100
13	03055	Milford	NH	0/100	82/100
14	03057	Mont Vernon	NH	0/100	50/100
15	03060	Nashua	NH	0/100	78/100
16	03061	Nashua	NH	0/100	83/100
17	03062	Nashua	NH	0/100	78/100
18	03063	Nashua	NH	0/100	83/100
19	03064	Nashua	NH	0/100	83/100
20	03070	New Boston	NH	0/100	63/100
21	03071	New Ipswich	NH	0/100	74/100
22	03076	Pelham	NH	0/100	62/100
23	03082	Lyndeborough	NH	0/100	53/100
24	03084	Temple	NH	0/100	53/100
25	03086	Wilton	NH	0/100	75/100
26	03101	Manchester	NH	0/100	80/100
27	03102	Manchester	NH	0/100	75/100
28	03103	Manchester	NH	0/100	75/100
29	03104	Manchester	NH	0/100	75/100
30	03105	Manchester	NH	0/100	79/100
31	03106	Hooksett	NH	0/100	78/100
32	03107	Manchester	NH	0/100	79/100
33	03108	Manchester	NH	0/100	79/100
34	03109	Manchester	NH	0/100	80/100
35	03110	Bedford	NH	0/100	70/100
36	03111	Manchester	NH	0/100	79/100
37	03215	Waterville Valley	NH	0/100	72/100
38	03216	Andover	NH	0/100	51/100
39	03217	Ashland	NH	0/100	70/100
40	03218	Barnstead	NH	0/100	75/100
41	03220	Belmont	NH	0/100	53/100
42	03221	Bradford	NH	0/100	53/100
43	03222	Bristol	NH	0/100	73/100
44	03223	Campton	NH	0/100	52/100
45	03224	Canterbury	NH	0/100	72/100
46	03225	Center Barnstead	NH	0/100	63/100
47	03226	Center Harbor	NH	0/100	75/100
48	03227	Center Sandwich	NH	0/100	40/100
49	03229	Contoocook	NH	0/100	72/100
50	03230	Danbury	NH	0/100	63/100
51	03231	East Andover	NH	0/100	53/100
52	03233	Elkins	NH	0/100	53/100
53	03234	Epsom	NH	0/100	65/100
54	03235	Franklin	NH	0/100	83/100
55	03237	Gilmanton	NH	0/100	63/100
56	03238	Glencliff	NH	0/100	49/100
57	03240	Grafton	NH	0/100	53/100
58	03241	Hebron	NH	0/100	75/100
59	03242	Henniker	NH	0/100	54/100
60	03243	Hill	NH	0/100	72/100
61	03244	Hillsborough	NH	0/100	69/100
62	03245	Holderness	NH	0/100	47/100
63	03246	Laconia	NH	0/100	78/100
64	03247	Laconia	NH	0/100	83/100
65	03249	Gilford	NH	0/100	73/100
66	03251	Lincoln	NH	0/100	78/100
67	03252	Lochmere	NH	0/100	75/100
68	03253	Meredith	NH	0/100	78/100
69	03254	Moultonborough	NH	0/100	41/100
70	03255	Newbury	NH	0/100	57/100
71	03256	New Hampton	NH	0/100	33/100
72	03257	New London	NH	0/100	75/100
73	03258	Chichester	NH	0/100	58/100
74	03259	North Sandwich	NH	0/100	40/100
75	03260	North Sutton	NH	0/100	53/100
76	03262	North Woodstock	NH	0/100	70/100
77	03263	Pittsfield	NH	0/100	75/100
78	03264	Plymouth	NH	0/100	77/100
79	03266	Rumney	NH	0/100	49/100
80	03268	Salisbury	NH	0/100	63/100
81	03269	Sanbornton	NH	0/100	75/100
82	03272	South Newbury	NH	0/100	53/100
83	03273	South Sutton	NH	0/100	63/100
84	03275	Suncook	NH	0/100	64/100
85	03276	Tilton	NH	0/100	69/100
86	03278	Warner	NH	0/100	74/100
87	03279	Warren	NH	0/100	74/100
88	03280	Washington	NH	0/100	63/100
89	03281	Weare	NH	0/100	57/100
90	03282	Wentworth	NH	0/100	63/100
91	03284	Springfield	NH	0/100	53/100
92	03285	Thornton	NH	0/100	53/100
93	03287	Wilmot	NH	0/100	72/100
94	03289	Winnisquam	NH	0/100	70/100
95	03293	Woodstock	NH	0/100	75/100
96	03298	Tilton	NH	0/100	71/100
97	03299	Tilton	NH	0/100	71/100
98	03301	Concord	NH	0/100	53/100
99	03302	Concord	NH	0/100	58/100
100	03303	Concord	NH	0/100	53/100

Methodology

Safest gas rankings show ZIP codes with the lowest PHMSA gas distribution incident risk scores. A score of 0-5 means the county has no or very few recorded incidents since 2004. Low scores indicate areas with well-maintained gas infrastructure and minimal historical incidents.

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

What makes an area safe from gas incidents?

Low gas risk areas typically have newer pipeline infrastructure, fewer distribution lines per capita, or areas that rely less on natural gas for heating. However, individual home safety still depends on appliance maintenance and CO detector placement.

Should I still install CO detectors in low-risk areas?

Yes. The CPSC recommends CO detectors in every home regardless of area risk. Carbon monoxide can come from any fuel-burning appliance — furnaces, water heaters, fireplaces, generators, and even attached garages.