Matanuska-Susitna County, AK

ZIP 99667

In ZIP 99667, 1 of the 12 things we check have at least one part graded D or F.

• 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: Tesoro - Anchorage Terminal (89%), mostly benzene.
• Fine particles (PM2.5) average 4.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 99667

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Air qualityA
• Neighborhood health statusD
• Radiation signalsC

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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