COUNTY REPORT MD

Dorchester County, Maryland

16 ZIP codes · Avg score 100/100 · Grade A

ZipCheckup grade for Dorchester County: A.

Checked records flag no major concern; missing data is unknown.

High on the scale: Dorchester County (16 ZIP codes).

How Dorchester County Compares

Dorchester County100/100
Maryland avg69/100
National avg73/100

How Dorchester County Compares

A
County Grade
100/100
Avg Safety Score
16
ZIP Codes
2
Water Systems

Dorchester County scores 31 points above the Maryland state average (69/100) and 27 points above the national average (73/100).

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

A
County Grade
100
Avg Safety Score
16
ZIP Codes
Best ZIP: 21613 (100/100)
Lowest ZIP: 21613 (100/100)
$248K
Median Home Value
$300
Avg Remediation (0.12% of home value)

ZIP Code Risk Map

Water Quality Map: Dorchester County, Maryland

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 15.9 (asthma 11.5%, diabetes 16.6%)

Modeled additional annual cost estimate per homeowner: $4,936, largest modeled factor: Sea Level

57% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 11.5% (national: 8.9%)
Diabetes 16.6% (national: 10.5%)
Obesity 41.8% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1971
Median Build Year
57%
Pre-1980 Housing
47/100
Infrastructure Stress Indicator
69%
ZIPs with High Infrastructure Stress
High
Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $4,936

Sea Level Rise $2,906/yr
Flood $1,386/yr
Energy Code Gap $489/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

15,654 housing units in Dorchester County

Pre-1940 23%
1940–1959 15%
1960–1979 19%
1980–1999 19%
2000+ 24%

Source: U.S. Census Bureau ACS B25034 (Year Structure Built).

Water Safety Affordability

How much it costs to fix water issues relative to home values in Dorchester County

$248K
Median Home Value
$300
Est. Remediation Cost
0.1%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Dorchester County can be compared with the median property value; actual costs vary by property.

Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.

Health Outcomes vs National Average

CDC PLACES data for Dorchester County residents

Asthma 11.5% (US avg: 8.9%)
Diabetes 16.6% (US avg: 11%)
Obesity 41.8% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Dorchester County ZIP codes

2 community water systems mapped to Dorchester County ZIP codes; EPA may list more systems serving the county.

Systems with the most violations in Dorchester County

1 water system with violations in EPA records.

All ZIP Codes in Dorchester County

16 ZIP codes tracked in Dorchester County.

# ZIP Code City Safety Score Grade Violations Home Value
1 21613 Cambridge 100 A 0 $280K
2 21622 Church Creek — — $248K
3 21626 Crapo — — $708K
4 21627 Crocheron — — —
5 21631 East New Market — — $308K
6 21634 Fishing Creek — — $275K
7 21643 Hurlock — — 2 (1 health) $220K
8 21648 Madison — — $171K
9 21659 Rhodesdale — — 2 (1 health) $202K
10 21664 Secretary — — $172K
11 21669 Taylors Island — — $410K
12 21672 Toddville — — $85K
13 21675 Wingate — — —
14 21677 Woolford — — $439K
15 21835 Linkwood — — —
16 21869 Vienna — — $203K

Recommended Buyer Guides for Dorchester County

Read the note next to each link: it gives the reason, such as a radon zone designation or housing age, that led to the recommendation.

Overview

Dorchester County in Maryland covers 16 tracked ZIP records with an average Home Safety Score of A (100/100) across 1 scored records.

2 of 3 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 1 health-based violation appear in the available health breakdown.

← Back to Maryland Home Safety Profile

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Dorchester County?
Dorchester County receives an average Home Safety grade of A from its scored ZIP records (16 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Dorchester County?
We map 2 public water systems to 16 ZIP codes in our data for Dorchester County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Dorchester County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Dorchester County is sea level. Across all modeled risk factors, the estimated average additional annual cost is $4,936 per homeowner; actual costs vary by home.
How old are homes in Dorchester County?
The median home build year in Dorchester County is 1971. 57% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Dorchester County compare to Maryland?
Dorchester County has an average Home Safety Score of 100/100 under model 4.0.0, which is at or above the Maryland state average of 69/100.

How to cite this page

APA ZipCheckup. (2026). Dorchester County, MD: HSS 100/100; 1 Health Violation. https://zipcheckup.com/county/maryland/dorchester/
BibTeX
@misc{zipcheckup-county-maryland-dorchester,
  author = {{ZipCheckup}},
  title  = {{Dorchester County, MD: HSS 100/100; 1 Health Violation}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/maryland/dorchester/}
}

Page version: October 2026.

Get safety alerts for Dorchester, Maryland

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool - no phone call required.