2026 Rankings

Worst ZIP Codes for Homebuyers in New Hampshire — 2026

Last updated: July 19, 2026

282 ZIP codes ranked by Purchase Risk #1: ZIP 03812 (Bartlett, NH) - 66/100
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 282 ZIP codes with data in New Hampshire, these are the highest-ranked areas for purchase risk. See also: National Worst ZIP Codes for Homebuyers — Hidden Risk Factors | All New Hampshire Rankings

Statistic Value
ZIP codes ranked 282
Highest value 66/100
Median value 36/100
State New Hampshire

Top 100 Worst ZIP Codes

Rank ZIP Code City State Purchase Risk Safety Score
1 03812 Bartlett NH 66/100 60/100
2 03838 Glen NH 65/100 15/100
3 03238 Glencliff NH 60/100 49/100
4 03890 West Ossipee NH 57/100 45/100
5 03216 Andover NH 56/100 51/100
6 03245 Holderness NH 56/100 47/100
7 03256 New Hampton NH 56/100 33/100
8 03302 Concord NH 56/100 58/100
9 03305 Concord NH 56/100 50/100
10 03849 Madison NH 56/100 12/100
11 03042 Epping NH 55/100 50/100
12 03842 Hampton NH 55/100 67/100
13 03275 Suncook NH 54/100 64/100
14 03818 Conway NH 54/100 59/100
15 03045 Goffstown NH 53/100 62/100
16 03101 Manchester NH 53/100 80/100
17 03871 Rye Beach NH 53/100 50/100
18 03301 Concord NH 52/100 53/100
19 03741 Canaan NH 52/100 52/100
20 03886 Tamworth NH 52/100 43/100
21 03047 Greenfield NH 51/100 53/100
22 03223 Campton NH 51/100 52/100
23 03307 Loudon NH 51/100 40/100
24 03816 Center Tuftonboro NH 51/100 31/100
25 03870 Rye NH 51/100 59/100
26 03076 Pelham NH 50/100 62/100
27 03079 Salem NH 50/100 69/100
28 03234 Epsom NH 50/100 65/100
29 03254 Moultonborough NH 50/100 41/100
30 03281 Weare NH 50/100 57/100
31 03869 Rollinsford NH 50/100 40/100
32 03303 Concord NH 49/100 53/100
33 03574 Bethlehem NH 49/100 52/100
34 03814 Center Ossipee NH 49/100 34/100
35 03882 Effingham NH 49/100 51/100
36 03077 Raymond NH 48/100 70/100
37 03743 Claremont NH 48/100 77/100
38 03811 Atkinson NH 48/100 66/100
39 03266 Rumney NH 47/100 49/100
40 03431 Keene NH 47/100 73/100
41 03470 Winchester NH 47/100 69/100
42 03748 Enfield NH 47/100 70/100
43 03773 Newport NH 47/100 54/100
44 03817 Chocorua NH 47/100 53/100
45 03846 Jackson NH 47/100 59/100
46 03885 Stratham NH 47/100 55/100
47 03242 Henniker NH 46/100 54/100
48 03279 Warren NH 46/100 74/100
49 03580 Franconia NH 46/100 56/100
50 03809 Alton NH 46/100 55/100
51 03823 Madbury NH 46/100 46/100
52 03864 Ossipee NH 46/100 38/100
53 03872 Sanbornville NH 46/100 50/100
54 03883 South Tamworth NH 46/100 53/100
55 03221 Bradford NH 45/100 53/100
56 03229 Contoocook NH 45/100 72/100
57 03253 Meredith NH 45/100 78/100
58 03878 Somersworth NH 45/100 71/100
59 03285 Thornton NH 44/100 53/100
60 03304 Bow NH 44/100 71/100
61 03458 Peterborough NH 44/100 67/100
62 03765 Haverhill NH 44/100 73/100
63 03845 Intervale NH 44/100 69/100
64 03855 New Durham NH 44/100 73/100
65 03865 Plaistow NH 44/100 65/100
66 03103 Manchester NH 43/100 75/100
67 03264 Plymouth NH 43/100 77/100
68 03561 Littleton NH 43/100 75/100
69 03813 Center Conway NH 43/100 45/100
70 03847 Kearsarge NH 43/100 40/100
71 03867 Rochester NH 43/100 76/100
72 03894 Wolfeboro NH 43/100 69/100
73 03442 Bennington NH 42/100 70/100
74 03570 Berlin NH 42/100 83/100
75 03608 Walpole NH 42/100 69/100
76 03740 Bath NH 42/100 75/100
77 03771 Monroe NH 42/100 78/100
78 03801 Portsmouth NH 42/100 77/100
79 03441 Ashuelot NH 41/100 63/100
80 03467 Westmoreland NH 41/100 58/100
81 03582 Groveton NH 41/100 55/100
82 03602 Alstead NH 41/100 75/100
83 03756 Lebanon NH 41/100 78/100
84 03784 West Lebanon NH 41/100 63/100
85 03848 Kingston NH 41/100 56/100
86 03854 New Castle NH 41/100 70/100
87 03048 Greenville NH 40/100 55/100
88 03102 Manchester NH 40/100 75/100
89 03244 Hillsborough NH 40/100 69/100
90 03581 Gorham NH 40/100 70/100
91 03585 Lisbon NH 40/100 69/100
92 03603 Charlestown NH 40/100 58/100
93 03766 Lebanon NH 40/100 74/100
94 03777 Orford NH 40/100 75/100
95 03874 Seabrook NH 40/100 70/100
96 03104 Manchester NH 39/100 75/100
97 03249 Gilford NH 39/100 73/100
98 03452 Jaffrey NH 39/100 71/100
99 03456 Marlow NH 39/100 63/100
100 03584 Lancaster NH 39/100 70/100

Methodology

The Home Purchase Risk Score combines environmental hazards that create unexpected costs for homebuyers: water system violations requiring filtration, lead service lines requiring replacement, radon requiring mitigation systems, flood zones requiring insurance, and aging infrastructure requiring upgrades. These are factors that standard home inspections may not fully capture.

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: 2026-07-19.

Frequently Asked Questions

What is the Home Purchase Risk Score?

This score (0-100) estimates the hidden environmental costs a homebuyer may face: water filtration needs, lead pipe replacement, radon mitigation, flood insurance, and infrastructure upgrades. Higher scores mean more potential unexpected expenses after purchase.

What should homebuyers do in high-risk ZIP codes?

Request a water quality test, check for lead service lines with the utility, test for radon before closing, verify FEMA flood zone designation, and factor in potential remediation costs ($5,000-$30,000+) to your budget.

Explore More Rankings

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

Related Rankings

Water Safety 2026 EPA violations and water quality scores Lead Risk 2026 Lead pipe infrastructure and EPA exceedances Infrastructure 2026 Aging pipes, system age and remediation costs
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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