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Flood zone · Indiana

Flood zone in Indiana

Flood zone (FEMA NFHL) data for ZIP codes in Indiana. Pick a ZIP below to dive into the flood zone summary.

Last verified 2026-09-24 · methodology

What lands here

Not on zipradar yet. The plan is the FEMA flood zone code, what it means in plain English, and the base flood elevation where assigned. Until then, look the address up on FEMA's Flood Map Service Center.

Source & refresh

FEMA NFHL. Refreshed quarterly loma updates. Primary source →

Indiana top concern

Radon, lead pipes (older Rust Belt cities)

Indiana has Zone 1 radon coverage across most counties. Lead-service-line inventories under LCRR are heaviest in Gary, South Bend, Hammond, Indianapolis. Tornado exposure peaks April-June.

See Indiana 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.

4 Indiana ZIPs