Collin County, Texas
32 ZIP codes · Avg score 93/100 · Grade A · Updated
ZipCheckup grade for Collin County: A.
No federal data flags a major home-safety concern for this ZIP.
Throughout Collin County, the 32 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 Collin County Compares
How Collin County Compares
Collin County scores 10 points above the Texas state average (83/100) and 20 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: Collin County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 10.3 (asthma 8.9%, diabetes 9.5%)
Estimated additional annual cost per homeowner: $591, driven primarily by flood
20.5% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Collin County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 17 violations. Past 5 years: 27 total (27 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: $591
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
381,147 housing units in Collin 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 Collin County
Remediation costs are relatively manageable for most homeowners in Collin 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 Collin County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Collin County
8 community water systems serving Collin County.
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Show all 8 water systems
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45 total water systems serve Collin County.
Systems with the most violations in Collin County
5 water systems with recorded EPA violations.
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All ZIP Codes in Collin County
32 ZIP codes tracked in Collin County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 75013 | Allen | 100 | A | 0 | $561K |
| 2 | 75023 | Plano | 100 | A | 0 | $386K |
| 3 | 75024 | Plano | 100 | A | 1 | $566K |
| 4 | 75025 | Plano | 100 | A | 0 | $467K |
| 5 | 75034 | Frisco | 100 | A | 1 | $680K |
| 6 | 75035 | Frisco | 100 | A | 1 | $562K |
| 7 | 75070 | Mckinney | 100 | A | 1 | $429K |
| 8 | 75074 | Plano | 100 | A | 0 | $347K |
| 9 | 75075 | Plano | 100 | A | 0 | $390K |
| 10 | 75093 | Plano | 100 | A | 0 | $623K |
| 11 | 75094 | Plano | 99 | A | 3 | $496K |
| 12 | 75164 | Josephine | 98 | A | 2 | $229K |
| 13 | 75069 | Mckinney | 97 | A | 8 | $414K |
| 14 | 75173 | Nevada | 95 | A | 9 (1 health) | $322K |
| 15 | 75033 | Frisco | 93 | A | 9 | $607K |
| 16 | 75166 | Lavon | 92 | A | 12 (1 health) | $385K |
| 17 | 75002 | Allen | 89 | A | 14 | $404K |
| 18 | 75454 | Melissa | 89 | A | 19 (2 health) | $422K |
| 19 | 75009 | Celina | 88 | A | 18 (2 health) | $471K |
| 20 | 75071 | Mckinney | 88 | A | 20 (2 health) | $449K |
| 21 | 75098 | Wylie | 86 | A | 24 | $363K |
| 22 | 75252 | Dallas | 83 | B | 0 | $530K |
| 23 | 75407 | Princeton | 83 | B | 34 (4 health) | $308K |
| 24 | 75409 | Anna | 83 | B | 59 (6 health) | $317K |
| 25 | 75424 | Blue Ridge | 83 | B | 77 (4 health) | $303K |
| 26 | 75442 | Farmersville | 83 | B | 39 (4 health) | $330K |
| 27 | 75078 | Prosper | 81 | B | 6 | $651K |
| 28 | 75026 | Plano | — | — | — | |
| 29 | 75086 | Plano | — | — | — | |
| 30 | 75097 | Weston | — | — | — | |
| 31 | 75121 | Copeville | — | — | — | |
| 32 | 75485 | Westminster | — | — | — |
Recommended Buyer Guides for Collin County
Below: editorial picks, no sponsored placements.
- Best Water Filters for PFAS — PFAS detected in 1 ZIP code
- 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 Collin County, Texas
Overview
Collin County in Texas covers 32 tracked ZIP records with an average Home Safety Score of A (93/100) across 27 scored records.
20 of 27 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 8 health-based violations appear in the available health breakdown.
← Back to Texas 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.