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Compare · AZ · UT

ZIP 85003 vs ZIP 84111

Phoenix (Downtown), AZ compared to Salt Lake City (Downtown), UT on twelve public-records dimensions sourced from EPA, FEMA, USDA, FBI, NCES, and county records. Each cell links to the per-ZIP topic page where the source citation and refresh cadence live.

Last verified 2026-05-13 · methodology

ZIP 85003

Phoenix (Downtown), AZ

Arizona

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ZIP 84111

Salt Lake City (Downtown), UT

Utah

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Side by side

Dimensions populate live as ingestion reaches each source. Every row will link to the primary regulator.

Arizona context

Radon, wildfire-WUI, water rights

Arizona has Zone 1 radon risk across most of its area per EPA's 1993 map. FEMA NFHL coverage is dense in flood-prone Maricopa + Pima counties; wildfire risk concentrates in Yavapai + Coconino + Cochise. Water-rights and utility-source diversity (CAP allotments vs. local groundwater) varies significantly between metros.

Arizona state page →

Utah context

Radon Zone 1, wildfire, water-supply scarcity

Utah is uniformly Zone 1 radon. Wildfire risk concentrates in the Wasatch + southern UT. Great Salt Lake decline + Colorado River allotment uncertainty drive water-supply pressure on Salt Lake metro EPA SDWIS systems.

Utah state page →

Read more on cross-ZIP comparisons

Editorial deep-dives that help when reading two places side-by-side — what each data layer actually proves, and what it doesn't.

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