Cobb County, Georgia
57 ZIP codes · Avg score 65/100 · Grade C
ZipCheckup grade for Cobb County: C.
A mixed picture - some signals here are worth your attention.
Within Cobb County, 57 tracked ZIP codes add up to a middle-tier grade, with water records that should be checked system by system.
How Cobb County Compares
How Cobb County Compares
Cobb County scores 9 points below the Georgia state average (74/100) and 8 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: Cobb County, Georgia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 10.9 (asthma 9.4%, diabetes 10.9%)
Modeled additional annual cost estimate per homeowner: $635, largest modeled factor: Flood
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: $635
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 Cobb County
Modeled remediation costs in Cobb 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 Cobb County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Cobb County ZIP codes
8 community water systems mapped to Cobb County ZIP codes; EPA may list more systems serving the county.
- C
- C
- C
- C
- D
- D
Show all 8 water systems
- D
- C
12 water systems mapped to Cobb County ZIP codes in our data; EPA may list more systems serving the county.
Systems with the most violations in Cobb County
4 water systems with violations in EPA records.
- D
- C
- D
- C
All ZIP Codes in Cobb County
57 ZIP codes tracked in Cobb County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 30008 | Marietta | 67 | C | 0 | $270K |
| 2 | 30060 | Marietta | 67 | C | 0 | $282K |
| 3 | 30064 | Marietta | 67 | C | 0 | $420K |
| 4 | 30067 | Marietta | 67 | C | 0 | $431K |
| 5 | 30068 | Marietta | 67 | C | 0 | $564K |
| 6 | 30080 | Smyrna | 67 | C | 0 | $410K |
| 7 | 30082 | Smyrna | 67 | C | 0 | $393K |
| 8 | 30106 | Austell | 67 | C | 0 | $255K |
| 9 | 30126 | Mableton | 67 | C | 0 | $348K |
| 10 | 30144 | Kennesaw | 67 | C | 0 | $310K |
| 11 | 30152 | Kennesaw | 67 | C | 0 | $385K |
| 12 | 30062 | Marietta | 66 | C | 2 | $457K |
| 13 | 30066 | Marietta | 66 | C | 2 | $374K |
| 14 | 30339 | Atlanta | 66 | C | 1 | $437K |
| 15 | 30101 | Acworth | 49 | D | 2 | $376K |
| 16 | 30127 | Powder Springs | 49 | D | 3 | $323K |
| 17 | 30006 | Marietta | — | — | — | |
| 18 | 30007 | Marietta | — | — | — | |
| 19 | 30010 | Norcross | — | — | — | |
| 20 | 30061 | Marietta | — | — | — | |
| 21 | 30063 | Marietta | — | — | — | |
| 22 | 30065 | Marietta | — | — | — | |
| 23 | 30069 | Marietta | — | — | — | |
| 24 | 30073 | Decatur | — | — | — | |
| 25 | 30081 | Smyrna | — | — | — | |
| 26 | 30090 | Marietta | — | — | 0 | — |
| 27 | 30111 | Clarkdale | — | — | 0 | — |
| 28 | 30156 | Kennesaw | — | — | — | |
| 29 | 30160 | Kennesaw | — | — | — | |
| 30 | 30301 | Atlanta | — | — | — | |
| 31 | 30348 | Atlanta | — | — | — | |
| 32 | 30355 | Atlanta | — | — | — | |
| 33 | 30357 | Atlanta | — | — | — | |
| 34 | 30361 | Atlanta | — | — | — | |
| 35 | 30364 | Atlanta | — | — | — | |
| 36 | 30368 | Atlanta | — | — | — | |
| 37 | 30369 | Atlanta | — | — | — | |
| 38 | 30371 | Atlanta | — | — | — | |
| 39 | 30375 | Atlanta | — | — | — | |
| 40 | 30378 | Atlanta | — | — | — | |
| 41 | 30380 | Atlanta | — | — | — | |
| 42 | 30384 | Atlanta | — | — | — | |
| 43 | 30385 | Atlanta | — | — | — | |
| 44 | 30388 | Atlanta | — | — | — | |
| 45 | 30396 | Atlanta | — | — | — | |
| 46 | 30398 | Atlanta | — | — | — | |
| 47 | 31106 | Atlanta | — | — | — | |
| 48 | 31126 | Atlanta | — | — | — | |
| 49 | 31131 | Atlanta | — | — | — | |
| 50 | 31139 | Atlanta | — | — | — | |
| 51 | 31144 | Kennesaw | — | — | — | |
| 52 | 31150 | Atlanta | — | — | — | |
| 53 | 31156 | Atlanta | — | — | — | |
| 54 | 31192 | Atlanta | — | — | — | |
| 55 | 31193 | Atlanta | — | — | — | |
| 56 | 31195 | Atlanta | — | — | — | |
| 57 | 31196 | Atlanta | — | — | — |
Recommended Buyer Guides for Cobb County
Up to five guides, picked by rule.
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Cobb County, Georgia
Overview
Cobb County in Georgia covers 57 tracked ZIP records with an average Home Safety Score of C (65/100) across 16 scored records.
5 of 18 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.
← Back to Georgia 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.