2026 Rankings

Safest ZIP Codes for Gas & CO Risk in Arizona — 2026

Last updated: June 4, 2026

556 ZIP codes ranked by Gas Risk Score #1: ZIP 85117 (Apache Junction, AZ) — 0/100
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 556 ZIP codes with data in Arizona, these are the lowest-ranked areas for gas risk score. See also: National Safest ZIP Codes for Gas & CO Risk | All Arizona Rankings

Statistic Value
ZIP codes ranked 556
Lowest value 0/100
Median value 3/100
State Arizona

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Gas Risk Score Safety Score
1 85117 Apache Junction AZ 0/100 72/100
2 85118 Gold Canyon AZ 0/100 74/100
3 85119 Apache Junction AZ 0/100 69/100
4 85120 Apache Junction AZ 0/100 69/100
5 85121 Bapchule AZ 0/100 53/100
6 85122 Casa Grande AZ 0/100 82/100
7 85123 Arizona City AZ 0/100 56/100
8 85128 Coolidge AZ 0/100 79/100
9 85130 Casa Grande AZ 0/100 82/100
10 85131 Eloy AZ 0/100 79/100
11 85132 Florence AZ 0/100 79/100
12 85137 Kearny AZ 0/100 70/100
13 85138 Maricopa AZ 0/100 58/100
14 85139 Maricopa AZ 0/100 58/100
15 85140 San Tan Valley AZ 0/100 69/100
16 85141 Picacho AZ 0/100 79/100
17 85143 San Tan Valley AZ 0/100 69/100
18 85144 Pinal County AZ 0/100 —
19 85145 Red Rock AZ 0/100 66/100
20 85147 Sacaton AZ 0/100 53/100
21 85172 Stanfield AZ 0/100 50/100
22 85173 Superior AZ 0/100 81/100
23 85178 Apache Junction AZ 0/100 72/100
24 85191 Valley Farms AZ 0/100 63/100
25 85192 Winkelman AZ 0/100 76/100
26 85193 Casa Grande AZ 0/100 82/100
27 85194 Casa Grande AZ 0/100 82/100
28 85218 Apache Junction AZ 0/100 72/100
29 85220 Apache Junction AZ 0/100 74/100
30 85222 Casa Grande AZ 0/100 82/100
31 85223 Arizona City AZ 0/100 48/100
32 85228 Coolidge AZ 0/100 79/100
33 85230 Casa Grande AZ 0/100 82/100
34 85231 Eloy AZ 0/100 78/100
35 85232 Florence AZ 0/100 78/100
36 85237 Kearny AZ 0/100 65/100
37 85238 Maricopa AZ 0/100 50/100
38 85239 Maricopa AZ 0/100 58/100
39 85240 Queen Creek AZ 0/100 78/100
40 85241 Picacho AZ 0/100 80/100
41 85243 Queen Creek AZ 0/100 78/100
42 85245 Red Rock AZ 0/100 66/100
43 85272 Stanfield AZ 0/100 50/100
44 85273 Superior AZ 0/100 81/100
45 85279 Florence AZ 0/100 78/100
46 85293 Casa Grande AZ 0/100 82/100
47 85294 Casa Grande AZ 0/100 82/100
48 85325 Bouse AZ 0/100 63/100
49 85328 Cibola AZ 0/100 58/100
50 85334 Ehrenberg AZ 0/100 80/100
51 85344 Parker AZ 0/100 66/100
52 85346 Quartzsite AZ 0/100 66/100
53 85348 Salome AZ 0/100 65/100
54 85357 Wenden AZ 0/100 82/100
55 85359 Quartzsite AZ 0/100 62/100
56 85360 Wikieup AZ 0/100 53/100
57 85371 Poston AZ 0/100 53/100
58 85533 Clifton AZ 0/100 49/100
59 85534 Duncan AZ 0/100 74/100
60 85540 Morenci AZ 0/100 67/100
61 85593 Greenlee County AZ 0/100 —
62 85602 Benson AZ 0/100 74/100
63 85603 Bisbee AZ 0/100 76/100
64 85605 Bowie AZ 0/100 78/100
65 85606 Cochise AZ 0/100 63/100
66 85607 Douglas AZ 0/100 76/100
67 85608 Douglas AZ 0/100 74/100
68 85609 Dragoon AZ 0/100 82/100
69 85610 Elfrida AZ 0/100 66/100
70 85613 Fort Huachuca AZ 0/100 76/100
71 85615 Hereford AZ 0/100 55/100
72 85616 Huachuca City AZ 0/100 77/100
73 85617 Mc Neal AZ 0/100 53/100
74 85618 Mammoth AZ 0/100 54/100
75 85620 Naco AZ 0/100 79/100
76 85623 Oracle AZ 0/100 83/100
77 85625 Pearce AZ 0/100 72/100
78 85626 Pirtleville AZ 0/100 63/100
79 85627 Pomerene AZ 0/100 71/100
80 85630 Saint David AZ 0/100 76/100
81 85631 San Manuel AZ 0/100 82/100
82 85632 San Simon AZ 0/100 58/100
83 85635 Sierra Vista AZ 0/100 72/100
84 85636 Sierra Vista AZ 0/100 77/100
85 85638 Tombstone AZ 0/100 73/100
86 85643 Willcox AZ 0/100 77/100
87 85644 Willcox AZ 0/100 82/100
88 85650 Sierra Vista AZ 0/100 77/100
89 85655 Douglas AZ 0/100 74/100
90 85670 Fort Huachuca AZ 0/100 74/100
91 85671 Sierra Vista AZ 0/100 76/100
92 85920 Alpine AZ 0/100 71/100
93 85922 Blue AZ 0/100 53/100
94 85924 Concho AZ 0/100 62/100
95 85925 Eagar AZ 0/100 82/100
96 85927 Greer AZ 0/100 63/100
97 85930 Mcnary AZ 0/100 53/100
98 85931 Forest Lakes AZ 0/100 75/100
99 85932 Nutrioso AZ 0/100 79/100
100 85936 Saint Johns AZ 0/100 66/100

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.

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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