Lowest Home Safety Scores in Maryland — 2026

Out of 615 ZIP codes with data in Maryland, these are the lowest-ranked areas for safety score. See also: National Lowest Home Safety Scores in America | All Maryland Rankings

Statistic	Value
ZIP codes ranked	615
Lowest value	32/100
Median value	60/100
State	Maryland

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Safety Score	Safety Score
1	21719	Cascade	MD	32/100	32/100
2	20859	Potomac	MD	33/100	33/100
3	20854	Potomac	MD	35/100	35/100
4	21122	Pasadena	MD	35/100	35/100
5	20610	Barstow	MD	40/100	40/100
6	20611	Bel Alton	MD	40/100	40/100
7	20617	Bryantown	MD	40/100	40/100
8	20629	Dowell	MD	40/100	40/100
9	20632	Faulkner	MD	40/100	40/100
10	20685	Saint Leonard	MD	40/100	40/100
11	20693	Welcome	MD	40/100	40/100
12	20704	Beltsville	MD	40/100	40/100
13	20733	Churchton	MD	40/100	40/100
14	20737	Riverdale	MD	40/100	40/100
15	20742	College Park	MD	40/100	40/100
16	20751	Deale	MD	40/100	40/100
17	20758	Friendship	MD	40/100	40/100
18	20768	Greenbelt	MD	40/100	40/100
19	20771	Greenbelt	MD	40/100	40/100
20	20782	Hyattsville	MD	40/100	40/100
21	20787	Hyattsville	MD	40/100	40/100
22	20788	Hyattsville	MD	40/100	40/100
23	20825	Chevy Chase	MD	40/100	40/100
24	20830	Olney	MD	40/100	40/100
25	20839	Beallsville	MD	40/100	40/100
26	20847	Rockville	MD	40/100	40/100
27	20848	Rockville	MD	40/100	40/100
28	20849	Rockville	MD	40/100	40/100
29	20857	Rockville	MD	40/100	40/100
30	20862	Brinklow	MD	40/100	40/100
31	20868	Spencerville	MD	40/100	40/100
32	20875	Germantown	MD	40/100	40/100
33	20880	Washington Grove	MD	40/100	40/100
34	20883	Gaithersburg	MD	40/100	40/100
35	20884	Gaithersburg	MD	40/100	40/100
36	20885	Gaithersburg	MD	40/100	40/100
37	20891	Kensington	MD	40/100	40/100
38	20897	Suburb Maryland Fac	MD	40/100	40/100
39	20898	Gaithersburg	MD	40/100	40/100
40	20899	Gaithersburg	MD	40/100	40/100
41	20913	Takoma Park	MD	40/100	40/100
42	21005	Aberdeen Proving Ground	MD	40/100	40/100
43	21010	Gunpowder	MD	40/100	40/100
44	21020	Boring	MD	40/100	40/100
45	21027	Chase	MD	40/100	40/100
46	21036	Dayton	MD	40/100	40/100
47	21085	Joppa	MD	40/100	40/100
48	21088	Lineboro	MD	40/100	40/100
49	21130	Perryman	MD	40/100	40/100
50	21150	Simpsonville	MD	40/100	40/100
51	21155	Upperco	MD	40/100	40/100
52	21156	Upper Falls	MD	40/100	40/100
53	21634	Fishing Creek	MD	40/100	40/100
54	21669	Taylors Island	MD	40/100	40/100
55	21715	Brownsville	MD	40/100	40/100
56	21718	Burkittsville	MD	40/100	40/100
57	21721	Chewsville	MD	40/100	40/100
58	21723	Cooksville	MD	40/100	40/100
59	21733	Fairplay	MD	40/100	40/100
60	21759	Ladiesburg	MD	40/100	40/100
61	21762	Libertytown	MD	40/100	40/100
62	21765	Lisbon	MD	40/100	40/100
63	21766	Little Orleans	MD	40/100	40/100
64	21767	Maugansville	MD	40/100	40/100
65	21770	Monrovia	MD	40/100	40/100
66	21775	New Midway	MD	40/100	40/100
67	21777	Point Of Rocks	MD	40/100	40/100
68	21778	Rocky Ridge	MD	40/100	40/100
69	21779	Rohrersville	MD	40/100	40/100
70	21781	Saint James	MD	40/100	40/100
71	21790	Tuscarora	MD	40/100	40/100
72	21794	West Friendship	MD	40/100	40/100
73	20612	Benedict	MD	45/100	45/100
74	20677	Port Tobacco	MD	45/100	45/100
75	20688	Solomons	MD	45/100	45/100
76	20695	White Plains	MD	45/100	45/100
77	20705	Beltsville	MD	45/100	45/100
78	20722	Brentwood	MD	45/100	45/100
79	20740	College Park	MD	45/100	45/100
80	20764	Shady Side	MD	45/100	45/100
81	20781	Hyattsville	MD	45/100	45/100
82	20783	Hyattsville	MD	45/100	45/100
83	20815	Chevy Chase	MD	45/100	45/100
84	20818	Cabin John	MD	45/100	45/100
85	20842	Dickerson	MD	45/100	45/100
86	20852	Rockville	MD	45/100	45/100
87	20853	Rockville	MD	45/100	45/100
88	20874	Germantown	MD	45/100	45/100
89	20878	Gaithersburg	MD	45/100	45/100
90	20895	Kensington	MD	45/100	45/100
91	21037	Edgewater	MD	45/100	45/100
92	21040	Edgewood	MD	45/100	45/100
93	21117	Owings Mills	MD	45/100	45/100
94	21219	Sparrows Point	MD	45/100	45/100
95	21220	Middle River	MD	45/100	45/100
96	21222	Dundalk	MD	45/100	45/100
97	21722	Clear Spring	MD	45/100	45/100
98	21757	Keymar	MD	45/100	45/100
99	21758	Knoxville	MD	45/100	45/100
100	21817	Crisfield	MD	45/100	45/100

Methodology

The Home Safety Score (0-100) combines four data dimensions: EPA water violation history, lead exposure risk from infrastructure and sampling data, county-level EPA radon zone classification, and FEMA flood claim records. A score of 0 indicates maximum risk across all dimensions.

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 does a low Home Safety Score mean?

A score below 40 (grade F) means the ZIP code has multiple overlapping risk factors: frequent EPA violations, elevated lead levels, high radon zone, and/or significant flood history. It reflects cumulative environmental risk, not necessarily current water quality.

Can a ZIP code improve its Safety Score?

Yes. Scores are recalculated as EPA data updates. When water systems resolve violations, replace lead service lines, or address infrastructure issues, scores improve over time.