Harford County, Maryland
20 ZIP codes · Avg score 58/100 · Grade C
ZipCheckup grade for Harford County: C.
A mixed picture - some signals here are worth your attention.
Harford County earns a C, tracked across 20 ZIP codes.
How Harford County Compares
How Harford County Compares
Harford County scores 11 points below the Maryland state average (69/100) and 15 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData
ZIP Code Risk Map
Water Quality Map: Harford County, Maryland
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.4 (asthma 10.2%, diabetes 11.6%)
Modeled additional annual cost estimate per homeowner: $2,656, largest modeled factor: Sea Level
41% of homes built before 1980 (lead paint was banned for residential use in 1978)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
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: $2,656
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
91,959 housing units in Harford County
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 Harford County
Modeled remediation costs in Harford 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 Harford County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Harford County ZIP codes
8 community water systems mapped to Harford County ZIP codes; EPA may list more systems serving the county.
- C
- C
- D
- C
- C
- D
Show all 8 water systems
- C
10 water systems mapped to Harford County ZIP codes in our data; EPA may list more systems serving the county.
Systems with the most violations in Harford County
3 water systems with violations in EPA records.
- C
- C
- C
All ZIP Codes in Harford County
20 ZIP codes tracked in Harford County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 21009 | Abingdon | 66 | C | 3 | $335K |
| 2 | 21017 | Belcamp | 66 | C | 3 | $242K |
| 3 | 21040 | Edgewood | 66 | C | 3 | $231K |
| 4 | 21085 | Joppa | 66 | C | 3 | $327K |
| 5 | 21130 | Perryman | 66 | C | 3 | — |
| 6 | 21078 | Havre De Grace | 59 | C | 22 (1 health) | $356K |
| 7 | 21005 | Aberdeen Proving Ground | 49 | D | 3 | — |
| 8 | 21014 | Bel Air | 49 | D | 3 | $408K |
| 9 | 21047 | Fallston | 49 | D | 3 | $517K |
| 10 | 21050 | Forest Hill | 49 | D | 3 | $439K |
| 11 | 21001 | Aberdeen | 48 | D | 5 | $267K |
| 12 | 21010 | Gunpowder | — | — | — | |
| 13 | 21018 | Benson | — | — | — | |
| 14 | 21028 | Churchville | — | — | 0 | $476K |
| 15 | 21034 | Darlington | — | — | 0 | $348K |
| 16 | 21084 | Jarrettsville | — | — | 3 | $445K |
| 17 | 21132 | Pylesville | — | — | $512K | |
| 18 | 21154 | Street | — | — | $459K | |
| 19 | 21160 | Whiteford | — | — | $364K | |
| 20 | 21161 | White Hall | — | — | $442K |
Recommended Buyer Guides for Harford County
These buyer guides are matched by rule rather than by hand - a PFAS record adds a PFAS filter guide, a lead action-level exceedance adds lead filter guides, a high share of pre-1978 homes adds lead paint test kits, EPA Radon Zone 1 add radon kits, and a top flood or wildfire risk adds related equipment.
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Harford County, Maryland
Overview
Harford County in Maryland covers 20 tracked ZIP records with an average Home Safety Score of C (58/100) across 11 scored records.
12 of 14 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
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.