Horry County, South Carolina
23 ZIP codes · Avg score 82/100 · Grade B · Updated
ZipCheckup grade for Horry County: B.
This ZIP looks solid, with a few items worth a quick check.
Horry County earns a high water safety grade - 23 ZIP codes tracked, virtually all compliant.
How Horry County Compares
How Horry County Compares
Horry County scores 2 points above the South Carolina state average (80/100) and 9 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: Horry County, South Carolina
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.5 (asthma 9.2%, diabetes 14.9%)
Estimated additional annual cost per homeowner: $5,149, driven primarily by sea_level
32.8% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Horry County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 4 violations. Past 5 years: 8 total (8 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: $5,149
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
214,516 housing units in Horry 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 Horry County
Remediation costs are relatively manageable for most homeowners in Horry 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 Horry County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Horry County
8 community water systems serving Horry County.
- B
- B
- B
- B
- B
Show all 8 water systems
- B
13 total water systems serve Horry County.
Systems with the most violations in Horry County
5 water systems with recorded EPA violations.
- B
- B
- B
- B
- B
All ZIP Codes in Horry County
23 ZIP codes tracked in Horry County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 29511 | Aynor | 83 | B | 0 | $217K |
| 2 | 29544 | Galivants Ferry | 83 | B | 0 | $192K |
| 3 | 29545 | Green Sea | 83 | B | 0 | $108K |
| 4 | 29575 | Myrtle Beach | 83 | B | 2 | $279K |
| 5 | 29576 | Murrells Inlet | 83 | B | 1 | $316K |
| 6 | 29577 | Myrtle Beach | 83 | B | 2 | $274K |
| 7 | 29579 | Myrtle Beach | 83 | B | 2 | $320K |
| 8 | 29588 | Myrtle Beach | 83 | B | 2 | $242K |
| 9 | 29568 | Longs | 82 | B | 3 | $235K |
| 10 | 29572 | Myrtle Beach | 82 | B | 5 | $385K |
| 11 | 29582 | North Myrtle Beach | 82 | B | 3 | $371K |
| 12 | 29526 | Conway | 80 | B | 5 (5 health) | $232K |
| 13 | 29527 | Conway | 80 | B | 5 (5 health) | $197K |
| 14 | 29569 | Loris | 79 | B | 5 | $190K |
| 15 | 29228 | Columbia | — | — | — | |
| 16 | 29528 | Conway | — | — | — | |
| 17 | 29566 | Little River | — | — | 4 | $276K |
| 18 | 29567 | Little Rock | — | — | $55K | |
| 19 | 29578 | Myrtle Beach | — | — | — | |
| 20 | 29583 | Pamplico | — | — | 0 | $104K |
| 21 | 29587 | Myrtle Beach | — | — | — | |
| 22 | 29597 | North Myrtle Beach | — | — | — | |
| 23 | 29598 | North Myrtle Beach | — | — | — |
Recommended Buyer Guides for Horry 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
Deep Dive Reports
Detailed analysis for Horry County, South Carolina
Overview
Horry County in South Carolina covers 23 tracked ZIP records with an average Home Safety Score of B (82/100) across 14 scored records.
12 of 16 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 5 health-based violations appear in the available health breakdown.
← Back to South 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.