Guilford County, North Carolina
48 ZIP codes · Avg score 81/100 · Grade B · Updated
ZipCheckup grade for Guilford County: B.
This ZIP looks solid, with a few items worth a quick check.
Throughout Guilford County, the 48 monitored ZIP codes show low violation rates and healthy safety scores - a pattern that puts the county well above the state baseline for drinking water quality.
How Guilford County Compares
How Guilford County Compares
Guilford County scores 3 points above the North Carolina state average (78/100) and 8 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 Last verified:
ZIP Code Risk Map
Water Quality Map: Guilford County, North Carolina
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.9 (asthma 11.2%, diabetes 12.2%)
Estimated additional annual cost per homeowner: $881, driven primarily by flood
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Guilford County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 23 violations. Past 5 years: 33 total (33 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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 DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $881
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Guilford County
Remediation costs are relatively manageable for most homeowners in Guilford County, representing a small fraction of property value.
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 Guilford County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Guilford County
8 community water systems serving Guilford County.
- B
- B
- B
- B
- C
- B
Show all 8 water systems
- B
- C
38 total water systems serve Guilford County.
Systems with the most violations in Guilford County
5 water systems with recorded EPA violations.
- C
- C
- C
- B
All ZIP Codes in Guilford County
48 ZIP codes tracked in Guilford County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 27357 | Stokesdale | 98 | A | 5 | $260K |
| 2 | 27358 | Summerfield | 94 | A | 14 | $410K |
| 3 | 27310 | Oak Ridge | 86 | A | 21 (1 health) | $496K |
| 4 | 27301 | Mc Leansville | 83 | B | 2 | $227K |
| 5 | 27401 | Greensboro | 83 | B | 2 | $138K |
| 6 | 27408 | Greensboro | 83 | B | 2 | $331K |
| 7 | 27214 | Browns Summit | 82 | B | 4 | $298K |
| 8 | 27377 | Whitsett | 82 | B | 3 | $259K |
| 9 | 27235 | Colfax | 81 | B | 5 (1 health) | $281K |
| 10 | 27262 | High Point | 81 | B | 6 (1 health) | $213K |
| 11 | 27265 | High Point | 80 | B | 9 (1 health) | $239K |
| 12 | 27282 | Jamestown | 80 | B | 8 (1 health) | $267K |
| 13 | 27407 | Greensboro | 80 | B | 8 (1 health) | $204K |
| 14 | 27409 | Greensboro | 79 | B | 10 (1 health) | $189K |
| 15 | 27410 | Greensboro | 79 | B | 8 (1 health) | $308K |
| 16 | 27263 | High Point | 78 | B | 13 (2 health) | $172K |
| 17 | 27249 | Gibsonville | 69 | C | 28 (2 health) | $220K |
| 18 | 27406 | Greensboro | 68 | C | 20 (1 health) | $192K |
| 19 | 27233 | Climax | — | — | 0 | $216K |
| 20 | 27261 | High Point | — | — | — | |
| 21 | 27264 | High Point | — | — | — | |
| 22 | 27268 | High Point | — | — | 3 (1 health) | — |
| 23 | 27283 | Julian | — | — | 2 | $200K |
| 24 | 27313 | Pleasant Garden | — | — | 21 (1 health) | $212K |
| 25 | 27342 | Sedalia | — | — | 2 | $182K |
| 26 | 27395 | Greensboro | — | — | — | |
| 27 | 27402 | Greensboro | — | — | — | |
| 28 | 27403 | Greensboro | — | — | 2 | $219K |
| 29 | 27404 | Greensboro | — | — | — | |
| 30 | 27405 | Greensboro | — | — | 2 | $151K |
| 31 | 27411 | Greensboro | — | — | 2 | — |
| 32 | 27412 | Greensboro | — | — | 2 | — |
| 33 | 27413 | Greensboro | — | — | — | |
| 34 | 27415 | Greensboro | — | — | — | |
| 35 | 27416 | Greensboro | — | — | — | |
| 36 | 27417 | Greensboro | — | — | — | |
| 37 | 27419 | Greensboro | — | — | — | |
| 38 | 27420 | Greensboro | — | — | — | |
| 39 | 27425 | Greensboro | — | — | — | |
| 40 | 27427 | Greensboro | — | — | — | |
| 41 | 27429 | Greensboro | — | — | — | |
| 42 | 27435 | Greensboro | — | — | — | |
| 43 | 27438 | Greensboro | — | — | — | |
| 44 | 27455 | Greensboro | — | — | 5 | $324K |
| 45 | 27495 | Greensboro | — | — | — | |
| 46 | 27497 | Greensboro | — | — | — | |
| 47 | 27498 | Greensboro | — | — | — | |
| 48 | 27499 | Greensboro | — | — | — |
Recommended Buyer Guides for Guilford County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Guilford County, North Carolina
Overview
Guilford County in North Carolina covers 48 tracked ZIP records with an average Home Safety Score of B (81/100) across 18 scored records.
27 of 28 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 7 health-based violations appear in the available health breakdown.
← Back to North Carolina 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.