Marion County, OR

ZIP 97303

In ZIP 97303, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Starlite Mobile Village meets every EPA legal limit; 3 contaminants are above health goals, led by arsenic at 448× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Arauco N.A. Inc. - Duraflake Particleboard (40%), mostly formaldehyde.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 368,378 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 97303

• Superfund sites nearbyA
• Factories and industrial sitesC to F
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB to D
• Drinking water qualityB to C
• Pesticide useD to F
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB to C

Based on 9 census tracts · compiled October 25, 2026 · how each grade works and its sources

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