| Variable | Resource |
| Hospital Discharge Rate for Cardiovascular Disease (ICD-9 codes 390 - 459) | CDC |
| Hospital Discharge Rate for Heart Attack ( ICD-9 code 410) | CDC |
| Hospital Discharge Rate for Stroke (ICD-9 codes 430-434 or 436 - 438) | CDC |
| Hospital Discharge Rate for Hypertension (ICD-9 codes 401 - 405) | CDC |
| Hospital Discharge Rate for Heart Disease (ICD-9 codes 390 - 398, 402, 404, or 410 - 429) | CDC |
| Annual Average Ambient Concentrations of CO (ppm) | EPA |
| Annual Average Ambient Concentrations of NO2 (ppb) | EPA |
| Annual Average Ambient Concentrations of O3 (ppm) | EPA |
| Annual Average Ambient Concentrations of PM2.5 (μg/m3) | EPA |
| Annual Average Ambient Concentrations of SO2 (ppb) | EPA |
| Percentage without 4+ Years College (%) | US Census |
| Families with Female Head of Household (%) | US Census |
| Percentage Food Stamp/Supplemental Nutrition Assistance Program Recipients (%) | US Census |
| Percentage Living in Poverty All Ages (%) | US Census |
| Percentage of Population with Native Origins (%) | US Census |
| Percentage of Population of Asian Origins (%) | US Census |
| Percentage of Population That Is African American (%) | US Census |
| Percentage of Population of Hispanic Origins (%) | US Census |
| Percentage of White Population (%) | US Census |
| Percentage of Population Living Within Half a Mile of a Park | US Census |
| Percentage of Households Living with Severe Housing Problems (%) | US Census |