Códigos ZIP con mayor riesgo de inundación en Maryland

Out of 428 ZIP codes with data in Maryland, these are the highest-ranked areas for flood claims. See also: National ZIP Codes with Highest Flood Risk | All Maryland Rankings

Statistic	Value
ZIP codes ranked	428
Highest value	1,912 claims
Median value	16 claims
State	Maryland

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Flood Claims	Safety Score
1	21842	Ocean City	MD	1,912 claims	73/100
2	21220	Middle River	MD	923 claims	45/100
3	21817	Crisfield	MD	796 claims	45/100
4	21219	Sparrows Point	MD	660 claims	45/100
5	21122	Pasadena	MD	592 claims	35/100
6	21222	Dundalk	MD	525 claims	45/100
7	20764	Shady Side	MD	452 claims	45/100
8	21666	Stevensville	MD	451 claims	68/100
9	21811	Berlin	MD	445 claims	78/100
10	21613	Cambridge	MD	440 claims	79/100
11	21403	Annapolis	MD	422 claims	68/100
12	21037	Edgewater	MD	333 claims	45/100
13	21638	Grasonville	MD	314 claims	78/100
14	21654	Oxford	MD	232 claims	79/100
15	21921	Elkton	MD	225 claims	66/100
16	21043	Ellicott City	MD	223 claims	54/100
17	21661	Rock Hall	MD	220 claims	78/100
18	21221	Essex	MD	197 claims	50/100
19	20674	Piney Point	MD	192 claims	50/100
20	21619	Chester	MD	187 claims	80/100
21	21229	Baltimore	MD	166 claims	58/100
22	21634	Fishing Creek	MD	155 claims	40/100
23	21030	Cockeysville	MD	154 claims	50/100
24	21209	Baltimore	MD	151 claims	58/100
25	20733	Churchton	MD	150 claims	40/100
26	20782	Hyattsville	MD	149 claims	40/100
27	21207	Gwynn Oak	MD	148 claims	50/100
28	21795	Williamsport	MD	143 claims	59/100
29	20751	Deale	MD	140 claims	40/100
30	21502	Cumberland	MD	140 claims	73/100
31	21231	Baltimore	MD	139 claims	58/100
32	21901	North East	MD	137 claims	59/100
33	20657	Lusby	MD	136 claims	51/100
34	20714	North Beach	MD	131 claims	51/100
35	21821	Deal Island	MD	130 claims	50/100
36	21620	Chestertown	MD	121 claims	84/100
37	21677	Woolford	MD	120 claims	60/100
38	21904	Port Deposit	MD	111 claims	66/100
39	21208	Pikesville	MD	110 claims	50/100
40	20744	Fort Washington	MD	103 claims	50/100
41	20732	Chesapeake Beach	MD	101 claims	60/100
42	21230	Baltimore	MD	99 claims	58/100
43	21228	Catonsville	MD	96 claims	50/100
44	21853	Princess Anne	MD	96 claims	73/100
45	21871	Westover	MD	95 claims	50/100
46	20772	Upper Marlboro	MD	93 claims	50/100
47	21671	Tilghman	MD	92 claims	60/100
48	21146	Severna Park	MD	90 claims	72/100
49	21663	Saint Michaels	MD	88 claims	60/100
50	20687	Scotland	MD	86 claims	50/100
51	21215	Baltimore	MD	84 claims	58/100
52	21648	Madison	MD	83 claims	60/100
53	21078	Havre De Grace	MD	81 claims	56/100
54	21672	Toddville	MD	81 claims	60/100
55	21012	Arnold	MD	80 claims	50/100
56	20753	District Heights	MD	79 claims	50/100
57	21622	Church Creek	MD	78 claims	60/100
58	20650	Leonardtown	MD	77 claims	70/100
59	21401	Annapolis	MD	77 claims	73/100
60	20664	Newburg	MD	75 claims	72/100
61	21211	Baltimore	MD	75 claims	58/100
62	21409	Annapolis	MD	74 claims	73/100
63	21001	Aberdeen	MD	73 claims	60/100
64	20817	Bethesda	MD	72 claims	60/100
65	20906	Silver Spring	MD	70 claims	52/100
66	21669	Taylors Island	MD	70 claims	40/100
67	21042	Ellicott City	MD	67 claims	59/100
68	21801	Salisbury	MD	67 claims	59/100
69	21804	Salisbury	MD	66 claims	59/100
70	21838	Marion Station	MD	66 claims	60/100
71	20748	Temple Hills	MD	65 claims	50/100
72	21227	Halethorpe	MD	65 claims	50/100
73	21701	Frederick	MD	65 claims	59/100
74	20737	Riverdale	MD	63 claims	40/100
75	21742	Hagerstown	MD	62 claims	58/100
76	21903	Perryville	MD	62 claims	59/100
77	20706	Lanham	MD	61 claims	50/100
78	20902	Silver Spring	MD	61 claims	52/100
79	21550	Oakland	MD	61 claims	73/100
80	21204	Towson	MD	60 claims	50/100
81	21777	Point Of Rocks	MD	60 claims	40/100
82	20639	Huntingtown	MD	56 claims	50/100
83	21093	Lutherville Timonium	MD	56 claims	50/100
84	21601	Easton	MD	56 claims	85/100
85	20735	Clinton	MD	55 claims	50/100
86	20854	Potomac	MD	53 claims	35/100
87	21562	Westernport	MD	52 claims	63/100
88	20685	Saint Leonard	MD	51 claims	40/100
89	21085	Joppa	MD	51 claims	40/100
90	20601	Waldorf	MD	50 claims	72/100
91	20659	Mechanicsville	MD	49 claims	55/100
92	21060	Glen Burnie	MD	49 claims	55/100
93	21162	White Marsh	MD	48 claims	55/100
94	21202	Baltimore	MD	48 claims	63/100
95	21210	Baltimore	MD	48 claims	63/100
96	21539	Lonaconing	MD	48 claims	75/100
97	21662	Royal Oak	MD	48 claims	55/100
98	21813	Bishopville	MD	48 claims	89/100
99	21914	Charlestown	MD	48 claims	55/100
100	20722	Brentwood	MD	47 claims	45/100

Methodology

Flood risk rankings use FEMA National Flood Insurance Program (NFIP) claim data. Total claims reflect historical flood events that resulted in insured property damage. High claim counts indicate areas with recurring flood exposure, which can compromise water infrastructure, introduce contaminant runoff, and damage home systems.

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

Why does flood history matter for home safety?

Flooding can contaminate drinking water supplies, damage water infrastructure, introduce sewage and chemical runoff, and compromise home foundations and electrical systems. Repeated flooding indicates persistent risk that affects long-term home safety.

Where does the flood data come from?

Flood claim data comes from the FEMA National Flood Insurance Program (NFIP), which tracks all insured flood losses by ZIP code. This includes claims from hurricanes, river flooding, storm surge, and heavy rainfall events.

Códigos ZIP con mayor riesgo de inundación en Maryland — 2026

Top 100 Worst ZIP Codes

Methodology

Frequently Asked Questions

Why does flood history matter for home safety?

Where does the flood data come from?

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