2026 Rankings

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

Last updated: June 4, 2026

1,064 ZIP codes ranked by Gas Risk Score #1: ZIP 50001 (Ackworth, IA) — 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 1,064 ZIP codes with data in Iowa, these are the lowest-ranked areas for gas risk score. See also: National Safest ZIP Codes for Gas & CO Risk | All Iowa Rankings

Statistic Value
ZIP codes ranked 1,064
Lowest value 0/100
Median value 0/100
State Iowa

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Gas Risk Score Safety Score
1 50001 Ackworth IA 0/100 40/100
2 50002 Adair IA 0/100 56/100
3 50005 Albion IA 0/100 64/100
4 50006 Alden IA 0/100 70/100
5 50008 Allerton IA 0/100 64/100
6 50010 Ames IA 0/100 58/100
7 50011 Ames IA 0/100 68/100
8 50012 Ames IA 0/100 64/100
9 50013 Ames IA 0/100 64/100
10 50014 Ames IA 0/100 68/100
11 50020 Anita IA 0/100 70/100
12 50022 Atlantic IA 0/100 65/100
13 50025 Audubon IA 0/100 65/100
14 50026 Bagley IA 0/100 40/100
15 50027 Barnes City IA 0/100 54/100
16 50029 Bayard IA 0/100 52/100
17 50031 Beaver IA 0/100 40/100
18 50033 Bevington IA 0/100 40/100
19 50034 Blairsburg IA 0/100 66/100
20 50036 Boone IA 0/100 64/100
21 50037 Boone IA 0/100 65/100
22 50040 Boxholm IA 0/100 40/100
23 50041 Bradford IA 0/100 40/100
24 50042 Brayton IA 0/100 66/100
25 50043 Buckeye IA 0/100 40/100
26 50044 Bussey IA 0/100 70/100
27 50046 Cambridge IA 0/100 70/100
28 50047 Carlisle IA 0/100 63/100
29 50048 Casey IA 0/100 66/100
30 50049 Chariton IA 0/100 66/100
31 50050 Churdan IA 0/100 66/100
32 50051 Clemons IA 0/100 66/100
33 50052 Clio IA 0/100 40/100
34 50055 Collins IA 0/100 70/100
35 50056 Colo IA 0/100 64/100
36 50057 Columbia IA 0/100 40/100
37 50058 Coon Rapids IA 0/100 70/100
38 50059 Cooper IA 0/100 40/100
39 50060 Corydon IA 0/100 64/100
40 50061 Cumming IA 0/100 58/100
41 50062 Melcher-dallas IA 0/100 66/100
42 50064 Dana IA 0/100 40/100
43 50065 Davis City IA 0/100 40/100
44 50067 Decatur IA 0/100 40/100
45 50068 Derby IA 0/100 40/100
46 50070 Dexter IA 0/100 66/100
47 50071 Dows IA 0/100 66/100
48 50072 Earlham IA 0/100 70/100
49 50074 Ellston IA 0/100 40/100
50 50075 Ellsworth IA 0/100 64/100
51 50076 Exira IA 0/100 70/100
52 50078 Ferguson IA 0/100 40/100
53 50099 Boone IA 0/100 65/100
54 50101 Galt IA 0/100 40/100
55 50102 Garden City IA 0/100 40/100
56 50103 Garden Grove IA 0/100 66/100
57 50104 Gibson IA 0/100 40/100
58 50105 Gilbert IA 0/100 70/100
59 50106 Gilman IA 0/100 66/100
60 50107 Grand Junction IA 0/100 65/100
61 50108 Grand River IA 0/100 40/100
62 50110 Gray IA 0/100 40/100
63 50112 Grinnell IA 0/100 36/100
64 50115 Guthrie Center IA 0/100 70/100
65 50116 Hamilton IA 0/100 40/100
66 50117 Hamlin IA 0/100 40/100
67 50118 Hartford IA 0/100 66/100
68 50119 Harvey IA 0/100 70/100
69 50120 Haverhill IA 0/100 40/100
70 50122 Hubbard IA 0/100 66/100
71 50123 Humeston IA 0/100 61/100
72 50124 Huxley IA 0/100 66/100
73 50125 Indianola IA 0/100 65/100
74 50126 Iowa Falls IA 0/100 56/100
75 50128 Jamaica IA 0/100 32/100
76 50129 Jefferson IA 0/100 70/100
77 50130 Jewell IA 0/100 48/100
78 50132 Kamrar IA 0/100 40/100
79 50133 Kellerton IA 0/100 30/100
80 50134 Kelley IA 0/100 66/100
81 50136 Keswick IA 0/100 63/100
82 50138 Knoxville IA 0/100 59/100
83 50139 Lacona IA 0/100 66/100
84 50140 Lamoni IA 0/100 65/100
85 50141 Laurel IA 0/100 66/100
86 50142 Le Grand IA 0/100 66/100
87 50143 Leighton IA 0/100 40/100
88 50144 Leon IA 0/100 60/100
89 50145 Liberty Center IA 0/100 40/100
90 50147 Lineville IA 0/100 55/100
91 50148 Liscomb IA 0/100 55/100
92 50149 Lorimor IA 0/100 40/100
93 50150 Lovilia IA 0/100 66/100
94 50151 Lucas IA 0/100 53/100
95 50152 Luther IA 0/100 65/100
96 50154 Mc Callsburg IA 0/100 40/100
97 50155 Macksburg IA 0/100 40/100
98 50156 Madrid IA 0/100 69/100
99 50157 Malcom IA 0/100 66/100
100 50158 Marshalltown IA 0/100 47/100

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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