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2026 Rankings

Westchester County, New York Home Safety Rankings - 37 ZIPs

Explore rankings under Home Safety Score model 4.0.0. Only ZIPs with all four required inputs are ranked; missing evidence is not imputed or reweighted.

Westchester County, New York (New York) includes 37 tracked ZIP codes and 38 mapped community water systems; confirm service for a specific address. Below are the water quality rankings for metro ZIPs with all required inputs.

Average Home Safety Grade: A (93/100)

Grade	ZIP Codes	%
A	12	67%
B	6	33%
C	0	0%
D	0	0%
F	0	0%

Top 10 ZIP Codes by Home Safety Score

Rank	ZIP	City	Score	Grade
1	10546	Millwood	100	A
2	10703	Yonkers	100	A
3	10704	Yonkers	100	A
4	10705	Yonkers	100	A
5	10710	Yonkers	100	A
6	10538	Larchmont	99	A
7	10567	Cortlandt Manor	99	A
8	10583	Scarsdale	99	A
9	10701	Yonkers	99	A
10	10520	Croton On Hudson	98	A

10 Riskiest ZIP Codes

Rank	ZIP	City	Score	Grade	Risk Factor
1	10536	Katonah	80	B	13 violations
2	10562	Ossining	82	B	4 violations
3	10549	Mount Kisco	82	B	3 violation(s)
4	10580	Rye	83	B	2 violation(s)
5	10560	North Salem	83	B	—
6	10507	Bedford Hills	83	B	—
7	10591	Tarrytown	96	A	10 violations
8	10533	Irvington	97	A	5 violations
9	10520	Croton On Hudson	98	A	3 violation(s)
10	10701	Yonkers	99	A	2 violation(s)

Most Common Contaminant Violations

Contaminant	Violations	ZIPs Affected
Total Trihalomethanes (TTHM)	31	15
Consumer Confidence Report Rule	16	6
Haloacetic Acids (HAA5)	13	10
Stage 2 DBP Rule	7	6
Stage 1 DBP Rule	6	5
Surface Water Treatment Rule	4	2
Lead and Copper Rule	4	2
Groundwater Rule	4	3

Lead Risk

Average of reported 90th-percentile lead results: 0.0054 mg/L (below EPA action level)
0 of 34 ZIP codes with known status exceed EPA lead action level
35% of housing built before 1950
67% of housing built before 1970

Cities in This Metro

Yonkers, NY — 6 ZIP codes
Croton On Hudson, NY — 2 ZIP codes
Armonk, NY — 1 ZIP code
Baldwin Place, NY — 1 ZIP code
Bedford, NY — 1 ZIP code
Bedford Hills, NY — 1 ZIP code
Buchanan, NY — 1 ZIP code
Chappaqua, NY — 1 ZIP code
Crompond, NY — 1 ZIP code
Cross River, NY — 1 ZIP code
Goldens Bridge, NY — 1 ZIP code
Harrison, NY — 1 ZIP code
Irvington, NY — 1 ZIP code
Katonah, NY — 1 ZIP code
Larchmont, NY — 1 ZIP code
Lincolndale, NY — 1 ZIP code
Mamaroneck, NY — 1 ZIP code
Millwood, NY — 1 ZIP code
Montrose, NY — 1 ZIP code
Mount Kisco, NY — 1 ZIP code
North Salem, NY — 1 ZIP code
Ossining, NY — 1 ZIP code
Cortlandt Manor, NY — 1 ZIP code
Pound Ridge, NY — 1 ZIP code
Rye, NY — 1 ZIP code
Scarsdale, NY — 1 ZIP code
Shenorock, NY — 1 ZIP code
South Salem, NY — 1 ZIP code
Tarrytown, NY — 1 ZIP code
Verplanck, NY — 1 ZIP code

...and 1 more cities

All 37 ZIP Codes Ranked

View complete ranking

Rank	ZIP	City	Score	Grade	Violations
1	10546	Millwood	100	A	0
2	10703	Yonkers	100	A	0
3	10704	Yonkers	100	A	0
4	10705	Yonkers	100	A	0
5	10710	Yonkers	100	A	0
6	10538	Larchmont	99	A	4
7	10567	Cortlandt Manor	99	A	3
8	10583	Scarsdale	99	A	2
9	10701	Yonkers	99	A	2
10	10520	Croton On Hudson	98	A	3
11	10533	Irvington	97	A	5
12	10591	Tarrytown	96	A	10
13	10507	Bedford Hills	83	B	0
14	10560	North Salem	83	B	0
15	10580	Rye	83	B	2
16	10549	Mount Kisco	82	B	3
17	10562	Ossining	82	B	4
18	10536	Katonah	80	B	13
19	10504	Armonk	—	—	0
20	10505	Baldwin Place	—	—	0
21	10506	Bedford	—	—	0
22	10511	Buchanan	—	—	0
23	10514	Chappaqua	—	—	11
24	10517	Crompond	—	—	0
25	10518	Cross River	—	—	2
26	10526	Goldens Bridge	—	—	11
27	10528	Harrison	—	—	2
28	10540	Lincolndale	—	—	0
29	10543	Mamaroneck	—	—	0
30	10548	Montrose	—	—	0
31	10576	Pound Ridge	—	—	0
32	10590	South Salem	—	—	12
33	10596	Verplanck	—	—	0
34	10597	Waccabuc	—	—	2

Data Sources

Water quality: EPA SDWIS
Housing: U.S. Census Bureau American Community Survey
Flood: FEMA NFIP
Flood scope: historical NFIP claim records and claim-rated-zone evidence; this is not current property-map coverage.

Reporting periods vary by source; the page metadata identifies this materialization.

Methodology
Model 4.0.0 averages SDWIS water compliance and UCMR5 PFAS within drinking water, then averages drinking water, county radon, and annual AQI as three equal domains. All four inputs are required. Score methodology → · Rankings methodology →

Disclaimer: Scores are based on EPA SDWIS reported data and are not a guarantee of current water safety. Water quality can change. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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How to cite this page

APA

ZipCheckup. (2026). Westchester County, New York Home Safety Rankings - 37 ZIPs. https://zipcheckup.com/rankings/metro/westchester-new-york/

BibTeX

@misc{zipcheckup-rankings-metro-westchester-new-york,
  author = {{ZipCheckup}},
  title  = {{Westchester County, New York Home Safety Rankings - 37 ZIPs}},
  year   = {2026},
  url    = {https://zipcheckup.com/rankings/metro/westchester-new-york/}
}

Page version: October 2026.

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