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Flood zone · ZIP 85003

Flood zone in Phoenix (Downtown), AZ

ZIP 85003 (Arizona) — flood zone summary sourced from FEMA NFHL. Refreshed on the cadence of the primary regulator with every claim cited to the source record.

Source: FEMA NFHLLast verified 2026-05-13 · methodology

What lands here

Pages show the flood zone code, what it means in plain English (1% annual chance zone, 0.2% annual chance zone, or outside mapped hazard), and the base flood elevation where assigned.

Source & refresh

FEMA NFHL. Refreshed quarterly loma updates. Stale data is flagged, never silently served. Primary source →

Limitations specific to this source

For an official flood-zone determination (required by lenders), consult the FEMA Map Service Center directly. zipradar shows informational classifications only.

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.

See Arizona state page for the full state-level rollup across all 12 dimensions.

Read more on flood zone

Editorial deep-dives explaining the source data, its limits, and how to read it.

Full dashboard for ZIP 85003

Flood zone is one of twelve dimensions zipradar federates per address. See the full federated summary for ZIP 85003:

Open Phoenix (Downtown), AZ dashboard →